This Week's Best Celebrity TwitPics!

Olympic fever has officially taken over the world ... including Twitter!

See personal shots from all of your favorite Olympians in London, including Ryan Lochte, Michael Phelps and the gold-medalist US Women's Gymnastics team -- Gabby Douglas, Aly Rasiman, Jordyn Wieber, Kyla Ross and McKayla Maroney!

Plus, Hilary Duff's adorable 4-month-old Luca mistakes his toy for a snack, Jordin Sparks and Jason Derulo celebrate a milestone, and did Snooki just post her wedding photo?

Check out the personal photos these celebs and more shared on Twitter this week!