The Week in Celeb Twitpics (PHOTOS)

Sexy Bikini Tweets
Starlets tweet out their sexiest bikini pics.
From Thailand to Hollywood, celebs were busy tweeting up a storm this week!

Justin Bieber and Cody Simpson hit the studio together. Miley Cyrus took a trip down memory lane by sharing a childhood photo. Meanwhile, Christina Aguilera and Rihanna tweeted photos of their hangouts with famous friends. Plus, one lucky fan got to meet Superman – erm, the very buff Henry Cavill – on the set of Man of Steel.

Check out what went down on Twitter this week by clicking through the gallery above!

This week, Rihanna bumped into Machete star Danny Trejo at the tattoo parlor when she was getting “Thug Life” done across her knuckles. Check out Rihanna’s plethora of ink below!