Star Sightings: Demi Lovato Gets Sporty, Sophia Bush and Gina

Plus, you won't believe how many stars were partying in Vegas!
Plus, you won't believe how many stars were partying in Vegas!

Last Night's Parties: Sophia Bush, Blake Mycoskie Celebrate TOMS Venice Flagship Opening, Britney Spears, Demi Lovato Tease X Factor Finale & More

Star Sightings: Drake Parties It Up, Jessica Biel Hits Up Vegas, Emily Ratajkowski Works Out & More!

Star Sightings: Paris Hilton Debuts New Fragrance, Snoop Dogg Hits the Turntables & More!

Star Sightings: Drake Parties It Up, Jessica Biel Hits Up Vegas, Emily Ratajkowski Works Out & More!

PEOPLE Star Tracks: Photos of Demi Lovato, Victoria Monet & More

HAS SNOOKI GONE TOO FAR? – Janet Charlton's Hollywood, Celebrity Gossip and Rumors

Sophia Bush versus Demi Lovato Female Celebrity Boxing Association (FCBA)

Star Sightings: Lady Gaga Hangs Out With Her Mom, Kaitlyn Bristowe Celebrates RoséFest and More!

Star Sightings: Demi Lovato Gets Sporty, Sophia Bush and Gina Rodriguez Hug It Out in LA & More!

Demi Lovato Postpones Concert 45 Minutes Before Due to 'Swollen Vocal Cords

Star Sightings: Demi Lovato Gets Sporty, Sophia Bush and Gina Rodriguez Hug It Out in LA & More!