Kelly Osbourne's weight loss brought her a new first -- putting on a bikini!
Kelly, who showed off her svelte 112 lb. figure at Teen Vogue's 8th Annual Young Hollywood party Friday night, did a photo shoot for Shape Magazine earlier in the day -- and it had her in tears.
After the shoot, Kelly Twittered "I just got done trying all the bikinis on I have never worn one in my life! I had a little tears of joy moment in the bathroom! I cried in my interview I just can't believe today happened it your not going to believe ur eyes!"
Check out more shots from the Young Hollywood party -- including pics of Emma Roberts, LC, Lo Bosworth, Brittany Snow, Shenae Grimes, Nikki Reed and more.
