Mark Zuckerberg's 40th birthday bash gave us a glimpse of an alternate universe where Zuck and Bill Gates are college roommates. Zuckerberg showcased the party in a Tuesday Instagram post.

The pair were spotted at the 40th birthday party of Alina Habba ... Decorations included lights, the colors gold and white, and a birthday cake that featured Habba holding on to Birkin bag ...

Katy Perry celebrated her 40th birthday with a glamorous 1940s-themed party where she addressed the rumours surrounding her recent weight loss. The star was accused of using the popular weight ...

Last night's Met Gala might have been the biggest fashion party of the year, but there's one event this weekend we wish we had a ticket to - David Beckham's spectacular 40th birthday bash.