Celebrities' First Tweets

Watch Katy Perry & Robert Pattinson Wreck Boyz II Men's 'I'll Make Love to You' on Karaoke

Photos: Taylor Swift Runs Errands with Her Security Guard

The Week In Pictures: October 18/25, 2013

Saturday: Sandra Bullock and Louis

Halloween came early for Sandra Bullock and her son, Louis. The adorably shy three-year-old kept things simple with a minimalist's take on the classic skeleton, but his Gravity star mom was nearly unrecognizable in undead she-monster makeup. A mom who goes all out to match her son for Halloween? Either Bullock is the coolest or the most embarrassing mom ever.

The Week In Pictures: October 11/18, 2013

Sunday: Pink

She flies through the air with the greatest of ease — all while belting out her signature tunes. Pink truly is one of a kind. While her fellow pop stars would've just jumped and twerked on the stage floor, the "True Love" singer gave her Los Angeles fans a taste of aerial wonders and circus magic. Now that's a performance truly worth the ticket price.

World, Meet Lea Michele's Adorable New Dog Pearl

Photos: Ashley Benson Out and About in Santa Monica

Photos : Victoria Justice and Pierson Fode on Set in NYC

The Week In Pictures: October 5-11, 2013

Saturday: Dianna Agron and Nick Mathers

Witness young, beautiful love at its finest! Glee star Dianna Agron spent the day chatting and giggling with boyfriend Nick Mathers at the Will Rogers State Historic Park. The charming couple has obviously perfected the art of the photogenic date — and the subtly coordinating ensembles.

Zac Efron Steps Back Into the Nightlife Post-Rehab

2013 American Music Award Nominees: Ariana Grande and Macklemore & Ryan Lewis Vie for New Artist of the Year

WATCH: Selena Gomez, Katy Perry Read Mean Tweets About Themselves on 'Jimmy Kimmel Live'

The Best Frozen Moments from Miley Cyrus' Hosting Gig on 'Saturday Night Live'

Miley Cyrus' second go-round hosting Saturday Night Live covered some predictable ground (the VMAs, twerking, her videos) but came out feeling like a win for Miley, who's shouldered probably more than her fair share of criticism for the past month. Here are some of the most memorable screen grabs from both sketch and musical performances.

The Week In Pictures: September/October 28- 04, 2013

Saturday: Kanye West and Kim Kardashian

Fashion Week is always a big deal, but so is Kim Kardashian and Kanye West stomping and scowling their way through the streets of Paris. While fashion mavens from around the world descended on the French capital to feast on new runway trends, folks outside were treated to Kim's cloaked post-baby body and Kanye's intentionally ripped up (and undoubtedly expensive) jeans. Be grateful, Paris.

Nina Dobrev Goes Topless for Obamacare

Photos: Selena Gomez Gets Coffee with Her Mom

Photos: Ashley Greene Finishes Her Workout