The Week's Most Fun and Funny Celebrity Twitter Pictures!

Stars gave glimpses into their glamorous lives on Twitter this week. Alessandra Ambrosio posed in lingerie with fellow Victoria's Angels Candice Swanepoel and Erin Heatherton, while Britney Spears had a belated birthday bash at the end of her tour. Taylor Swift got dolled up for a ball, and Tom Cruise met fans in Madrid before a Mission: Impossible— Ghost Protocol premiere — click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting news and photos!