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

Britney Spears appeared on which late night show show in her bikini?

2 of 10

Summit Entertainment is holding a round of Twilight conventions, and where is the first one located?

3 of 10

Madonna celebrated her birthday with Jesus Luz and her family; how old is she now?

4 of 10

What did Ashton Kutcher draw next to the words "lucky me" on a hotel's rooftop?

5 of 10

Where did Jay-Z and Beyonce vacation on a rented yacht?

6 of 10

Which WNBA team was Halle Berry cheering on?

7 of 10

Who did Lindsay and Ali Lohan sit next to at the Waverly Inn?

8 of 10

Eric Dane's "naked tape" scandal involved his wife and a beauty queen who held which title?

9 of 10

Who didn't attend The September Issue premiere?

10 of 10

Eva Longoria's opening her second Beso restaurant in which city?