This week, Aubrey O'Day flaunts her famous curves in a cut out swimsuit, Kelly Osbourne tries to lick her friend's armpit (eww) and John Stamos remembers the time he saw some dinosaurs up close and personal!

And, Jessica Alba shows off her bod while doing some hot yoga, James Franco and Megan Fox look like they're becoming besties and Kylie Jenner rocks new long blue extensions.

Plus, Lady Gaga looks pretty on the beach in Spain, Alessandra Ambrosio tests out her gambling skills in Las Vegas and Rihanna channels her inner Olivia Pope in the White House!

Click "Launch Gallery" above to see these stars personal pics and see even more celeb candids in this week's best celebrity TwitPics!