The royal wedding is just one group Halloween costume option. (Getty Images). | GALLERY: Click the image above for more ideas.

Halloween is a mere three weeks away, which means it’s time to get serious about coming up with a costume.

In the coming days, Celebritology will offer multiple suggestions inspired by celebrity and pop-culture trends.

Today’s suggestions fall in the group costume category. If you’re planning to dress up with a posse of friends or co-workers but don’t want to trot out the Kardashian family gear you wore last year, here are 10 potential options — ranging from the royal wedding to the cast of “Walking Dead” — that will turn your Halloween costume team into Team Awesome. View them via the gallery above.