We've not had a competition for a little while, so we thought it was about time we did! If you'd like to win this She Wolf T-shirt, signed by Shakira herself, then simply answer the following question:

Where did Shakira watch Rafa Nadal beat Russian Nikolay Davydenko in a tennis match in early 2009?

Please put your answer in the comments below, before Thursday, March 18th at 11am EST. We'll then pick a winner from among the correct answers.

If you'd like to buy one of the T-shirts without Shakira's signature on it, you can get them in our official store.