It's time to test your knowledge of what's happened this week with our favorite celebrities. Have you paid attention to everything that's gone down? Take the quiz!

1 of 10
What birthday did Paris Hilton celebrate on Wednesday?
27
29
30
31
2 of 10
Who said: “I will never do nudity . . . I don’t care if I frickin’ could get an Oscar for it, I’m not going to do it"?
Christina Aguilera
Kristen Bell
Jessica Simpson
Blake Lively
3 of 10
Where was Gerard Butler spotted shirtless?
Brazil
Mexico
Hawaii
Spain
4 of 10
What did Leonardo DiCaprio tell Parade is one of his favorite things to do?
Going to dinner
Swimming with his girlfriend
Traveling
Hanging out with friends
5 of 10
Who joined Chace Crawford, Ryan Phillippe and Kellan Lutz in the front row at Calvin Klein?
Ashton Kutcher
Jared Leto
Taylor Lautner
Penn Badgley
6 of 10
Which magazine did Megan Fox cover?
Vogue
Cosmopolitan
W
Harper's Bazaar
7 of 10
What was the name of the boat that Shia LaBeouf took Carey Mulligan out on for Valentine's Day?
Lady Hornblower
La Dolce Vida
Ladies First
Lady Elizabeth
8 of 10
What company was Zac Efron promoting in Australia?
Volcom
Billabong
Rip Curl
Oakley
9 of 10
Who designed Nicole Richie's engagement ring?
Neil Lane
Cartier
Tiffany & Co.
Harry Winston
10 of 10
Which fashion show did AnnaLynne McCord, Jessica Szohr and Michelle Trachtenberg sit front row at?
Jill Stuart
Tracy Reese
Marc Jacobs
Rebecca Taylor
Guess Who?
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Guess Who?