katy perry was in a john galiano look. and a headpiece that appears to spell out the word witness. while lauren wore this. singer rihanna stole the show in a red gown resembling a flower and a balloon. love was in the air as couples jennifer lopez and alex rodriguez along with selina gomez and the weekend made their red carpet debuts. madonna wore a camouflage gown complete with a canteen purse. >> my mind is on the scary time that we live in, but ultimately, what i want to see. >> reporter: and caroline kennedy wore a floral design. a bold choice that helped her outshine some of the best fashionistas in the business. >> ticket to the gala go for $30,000 each. the guest list typically tops out at 600 or less. >>> all right, hollywood narrowly averted a writer strike earlier this morning at about 1:30. the writers guild of america reached a deal for a new contract with the major studios and networks. writers were set to strike if a deal was not reached by the end of monday. we'll be right back. ,,,,,,,,,,,,,,,,,,,, what that could mean for people who rely on marijuana for chronic pa