Of the 24 acts still competing in the 2011 season of America’s Got Talent, there remains only one comedian, and she is Melissa Villasenor.

Villasenor and 11 other acts performed Tuesday night in one semifinal, with five of them advancing this week to the final 10. For her brief time onstage, the young impersonator chose to show off her impressions of Sarah Silverman, Wanda Sykes, Shakira and Christina Aguilera.

Sykes, for one, was impressed with how Villasenor portrayed her on national TV, writing on Twitter last night:

Here’s the clip of Villasenor in action, with all of the judges offering her praise afterward. Find out tonight if she made it to the finals. UPDATED: Villasenor did not advance to the finals, but she did enjoy a solid run this summer on primetime network TV. Congrats, Melissa!