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?

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"?

3 of 10

Where was Gerard Butler spotted shirtless?

4 of 10

What did Leonardo DiCaprio tell Parade is one of his favorite things to do?

5 of 10

Who joined Chace Crawford, Ryan Phillippe and Kellan Lutz in the front row at Calvin Klein?

6 of 10

Which magazine did Megan Fox cover?

7 of 10

What was the name of the boat that Shia LaBeouf took Carey Mulligan out on for Valentine's Day?

8 of 10

What company was Zac Efron promoting in Australia?

9 of 10

Who designed Nicole Richie's engagement ring?

10 of 10

Which fashion show did AnnaLynne McCord, Jessica Szohr and Michelle Trachtenberg sit front row at?