this is "nightline." >> continue, inside the final moments. >> reporter: for the young voice silenced. christina grimmie gunned down after a she. her brother tackling the attacker, and so many concert venue close calls, tonight the extreme lengths stars are going to to stay safe. plus, life after "lemonade" is sweet for sisters chloe and holly barry, the queen b proteges. >> i keep hearing this phrase, black girl magic. what does that mean to you? >> millions of hits online and counting. their rocket rise to super star dom. >> and look at this guy's work.

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thank you for join us. her tragic death nearly a week ago was lost in other headlines. christina grimmie, the rising young voice star gunned down at a performance. new details on the final moments that awful night. and new incites on how hard it is to keep performers safe. ♪ i came in like a wrecking ball ♪ >> reporter: she was the 22-year-old breakout star of "the voice" blinding the judges with her cover of "wrecking ball" in season six of the singing competition. >> that is the moment where you realize that this person can be a huge star. >> reporter: she came in third. and her career seemed to be taking off. but it all came to a tragic end early last friday night when she

was gunned down after a concert. >> two patients. the female patient and the shooter. >> reporter: she was opening for the band before you exit in arou orlando, florida, calling a call out before the show. >> please come near the show if you live near orlando, florida. >> reporter: some fans got an up close meet and greet. these photos capturing those moments. but then. >> gunshots went off. >> pop pop pop pop. >> i was traumatized. >> i was in shock. i didn't know what to do. >> reporter: a man in the crowd shot the singer at point-blank range. grimmie's brother who often appeared with her on youtube tackled the gunman who then shot and killed himself in the struggle. >> her brother is a hero for saving and stopping him, for not hurting anyone else.

>> reporter: grimmie was rushed to the hospital but died from her injuries the next morning. following the news of her death, some of music's biggest stars finding ways to remember their friend. have a salena gomez and biebe bieber. authorities later identified the shooter at 27-year-old kevin loibl from florida. >> they're going through the suspect's cell phone and computer to see if they can find a motive for this crime. the suspect had two handguns on his person and two additional loaded magazines for those handguns and a large hunting knife. >> reporter: his motive is still a mystery, but we know according to police he drove about 120

miles from his home in st. petersburg to her concert in orlando. >> the suspect in this case is not from orlando. he traveled to orlando, apparently, to commit this crime, and then had plans to travel back to where he came from. >> typically people who travel a long distance, in this case, armed, they well have some sort of fantasy in their head relationship with the person that they ultimately end up killing. a love relationship with the person that doesn't exist. >> reporter: this note posted on the killer's front door we his family offering their deepest sorrow for their son's actions. >> she love third down town. she love third down state. she loved singing. she loved the lord, and she loved me, and she was my baby sister. >> reporter: christina's brother spoke at a vigil for his sister in new jersey where they grew up. >> websiitnesses say that she w

arms open wide. she had no idea and treated everybody the same. it was hard for her because she was introverted. >> reporter: it was social media that prepped her for stardom and allowed her to connect with fans all the world. ♪ >> reporter: her popular covers on youtube amassing over 100 million views. like justin bieber's "one time". and "titanium". ♪ ♪ fire away fire away >> open up. >> reporter: for those wanting to be famous, it's a delicate balance between seem accessible to fans and saying face. >> someone like madonna, they're going to have security around them all the time no matter where they might. as you go down the tier of

people less famous make less money, chances are they may have no security. >> reporter: and there have been plenty of close calls. many captured in youtube videos like these. adam levine, her mentor accosted on stage by a fan who tried to hug him. the same thing happening to taylor swift, a perfect stranger grabbing her leg at a concert. a justin bieber fan rushed at the singer on stage before security tackled him. and beyonce was almost pulled off stage at a concert in brazil before security intervened. >> if you place the protected person in front of a large unscreened crowd, they're at jeopardy. >> reporter: he's from company that's protected celebrity royalty for years. >> the protective bubble says that no one that you have not screened for a weapon gets close

enough to your client to draw a weapon and shoot and murder your client. >> reporter: he says all the celebrities hes with must agree to follow his protocols without exception. >> celebrities hate the bubble. they like to control everything, and when you're controlling their movements and who gets access to the bubble, it irks them to a point, but they usually respect the bubble enough to stay within it. >> reporter: the bubble is too limiting for some and too expensive for others. >> that's the physical barrier to slap the hand down with the gun. >> reporter: but he's quick to admit while you can minimize risk, you can never completely eliminate it. >> there is no absolute 100%. but you can minimize it to about a 99% level. >> reporter: the location of christina grimmie's last performance posting the first performance since that night.

>> life goes on after any tragedy, and everyone is unified by music. >> reporter: and grimmie's funeral service is planned for tomorrow. family, friends and fans for now asking why her life had to be cut so short. ♪ >> up next, when queen b's got your back. meet the sisters from "lemonade" on the verge of super stardom. ♪ to severe rheumatoid arthritis, and you're talking to your doctor about your medication... this is humira. this is humira helping to relieve my pain and protect my joints from further damage. this is humira helping me go further. humira works for many adults. it targets and helps to block a specific source of inflammation that contributes to ra symptoms. doctors have been prescribing humira for over 13 years.

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of teen singing sensations on youtube, but this pair are so popular they caught the eye of the queen bee herself. sisters chloe and holly bailey are getting in formation. beyonce 2.0 is ready to soar. here's byron pits. ♪ >> reporter: the queen bee, beyonce in the ground breaking visual album, "lemonade" with cameos from serena williams and those two teenage girls. 17 and 16-year-old chloe and holly bailey who caught her attention when they sang pretty hurts. ♪ >> reporter: it's now phenomenon viewed more than 11.5 million times. how did she hear about you? >> youtube. >> we did the cover to pretty

hurts. >> that one out of all the covers got the most traction. >> two weeks later we got the e-mail from park wood. after we received that two days later we heard she wanted to sign us. we were screaming. >> yeah, we were like what is happening? oh, my gosh. >> reporter: it's like the queen bee signed them to a reported $1 million deal for six albums with park wood entertainment. >> we're to happy because we're given the freedom to make what we want to make. >> she's a great role model in every aspect of life. >> at 12 and 11 they started singing covers of popular songs and posted them online. >> you became youtube sensations. how did that combatting about? >> a lot of people said maybe you should sing this person's song and post it, and then one day we were at home and we were like, we're kind of bored. let's do this. let's sing this song we like,

"best thing i never had". >> when we saw 100 views we were excited. >> 100 views. >> oh, my goodness, and a week later it was 10,000. we were like what is happening. >> reporter: their you channel growing to more than 686,000 followers. their videos have a total of 56 million views. ♪ >> reporter: hits by adele. ♪ >> reporter: and lord. ♪ >> reporter: their music a unique blend of r&b, funk, rock and soul. starring in movies. >> but i want to marry michael

jackson. >> reporter: all right. do you remember this? oh, i totally remember that. ♪ >> reporter: i remember being so nervous. we were 6 and 8, right? >> yeah. ♪ loving you . >> that's so crazy. like ten years ago. >> reporter: and like their mentor, they are young, gifted and raised right. look how they greeted our entire crew when we first met. >> hi, i'm chloe. >> reporter: two young ladies raised right. a quality not lost for the first lady. >> let me tell you, i was so impressed with these young women and their family. my girls, chloe and hallie, come out. >> reporter: how many artists get to say we were deuced on stage by the first lady of the

united states? >> you get goose bumps saying her name. we were backstage and about to go on. i was about to break down crying while she was introducing us. >> i was like chloe, we're going on stage. you cannot cry right now. >> reporter: even after meetings with the likes of michelle obama and oprah, they're still just teenage girls who enjoy shopping. >> this is cool. i like this. >> reporter: and have their typical sister rivalry. >> why you blaming me? >> it's always over the smallest thing. you're wearing my clothes. but we always say sorry within minutes. >> reporter: who is guilty of wearing whose clothes? >> she wears more of my stuff. >> i think i'm guilty. >> yeah. >> sometimes you pick shoes. >> reporter: and always there with them on the road, their father, doug. what scares you? >> sometimes the possibility of possibly losing themselves. and when i say that i mean not being true to their own visions. >> reporter: anything scare you about how far you've come so quickly?

>> the only thing i fear is not taking risk and not being completely who i am, and i'm so glad my sister and i are here to keep each other on the right path and always do what's right and what's positive. >> reporter: that bond extends beyond words before their first ever new york city performance for their new ep, sugar symphony, it starts with a prayer, and then bursts into an explosion. we keep hearing the phrase black girl magic. what does that mean to you two? >> that means to me to just be so confident in who you are because it's magic. and you should just be confident in the skin you're in and everyone is beautiful no matter

what shade. >> don't be afraid. you're magical. you hold so much power in your hands. >> reporter: and that magic extends off stage to their fans. selfies, the millennial's autograph. >> you are living the dream. tell me the dream ten years from now. >> just to continue sharing our miez music and growing and getting better and putting out a wonderful message into the world. >> and ever since we were little our biggest dreams were to get grammys. >> reporter: what would you say to other young girls who have big dreams? >> it's just believe in yourself. because you believe in yourself, the outside does not matter. don't let anybody tell you you cannot do something, because you can and you should prove them wrong, because that is the most fun thing when you can turn around and be like ha, i did it. okay? >> reporter: for night line, i'm

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and finally, summer is here. skin is in. and in case you haven't noticed, so is the new kind of tattoo. if you've been thinking of inking, consider the fine print. he keeps ken dal and kylie jenner looking pretty in ink, and he's behind justin bieber's face. so you're in pretty good company if you're sporting a tattoo from renowned artist, john boy. >> i learned in the biker era where you pick a design off a wall and that was it, and then it just became more of an art form. >> reporter: it's his attention to detail, delicate designs and his specialty, microtattoos are

that are particularly appealing to people in the spotlight. >> they can go on screen without spending hours covering up their tattoos. >> reporter: something one glee actress is excited about. it's her 23rd tattoo today. >> to find out that's his specialty, i love the thin writing and needle. it's simple and classy. >> reporter: one hour of john boy's time runs you $300. he's quick. most tiny tattoos were less than that. next up in the chair, a first-timer all the way from sweden. >> i'm having something from the for florence and the machine song. >> reporter: in the end, she says it's worthwhile. >> i'm so happy. >> reporter: for john boy, another satisfied customer.

>> reporter: what's wrong with temporary tattoos? thank you for tuning. we're online at abcnews.com and our "nightline" facebook page. good night, america.

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