>> performing friday at iheart radio's jingle ball in l.a. it was her 35th birthday. who came out to surprise her? ryan seacrest brought a cake and 20,000 people that packed the arena. there they are. singing "happy birthday." looked and sounded great. did old hits and also new songs from the album. the show was huge. bruno mars, britney. elvis duran hosting it and putting a massive show together, tell me lots of surprises. justin bieber is closing the show. >> what? >> here in new york. >> is bruno going to be here, do you know? >> we can't say. i know that ariana grande will be here. >> they've announced it. right? >> is bruno comes? >> they always have surprises. this is the hottest ticket in town. >> i want barry manilow. >> oh, barry! >> that's who i want. >> amy schumer has a new role, >> she does. amy schumer a rumor, not confirmed. she might be playing barbie. that's right. a live action version of barbie. the story line is something along the following -- barbie doesn't really fit into barbie land anymore. goes out into the real world and finds out that beaut

>> reporter: we're backstage at iheart jingle ball and i'm giving you an all-access pass. look at this. crazy. say hi to kathie lee and hoda. >> hi, kathie lee and hoda. >> i love you ladies so much and can't wait to see you soon. >> series crushes on -- >> which one? one? >> kind of 50/50 for me. i just like watching them take a few sips in the morning. gets me going. >> ellie, you're such a sweetheart. this year have you been naughty or nice? >> i've been -- i'm going to say nice. yeah. >> a little bit of naughty? >> yeah, just a little bit. [ cheers and applause ] >> reporter: time to start jingle ball. we're heading to the stage. you want 20 go with me? let's go! >> all: three, two, one -- >> it's crazy. >> reporter: madison square garden, how are we feeling tonight? wow. there. this is going to be the best show ever. ? doubting and hoping ? >> sing it, y'all. ? something inside me's changed ? ? oh so up ? >> reporter: so hailee steinfeld is celebrating her birthday here again this year like she did last year. we gave her a cake last year. we're about to give her anoth