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This week, Rihanna bumps into Jennifer Lawrence at dinner in Paris, Aubrey O'Day goes makeup free and shows off her amazing bikini bod in Hawaii, and Snooki shares a cute snap of her and Jionni LaValle getting ready for their beach day.

Also, Vanessa Hudgens dresses up as a mermaid, Rose McGowan posts a very strange "selfie" and Charlie Sheen takes a cute family photo with his boys!

Plus, Courtney Stodden flaunts her two very large purchases (again), Jenny McCarthy admits she's not a natural blonde and Joey Fatone poses with a gnome ... and they look identical!

See these celeb candids and more personal photos from your favorite stars by clicking "Launch Gallery" above for this week's best celebrity twitpics!