Operation Glass Slipper: High school girls in the Twin Cities whose financial circumstances make it impossible to attend prom can get gowns and accessories free of charge. Students need a referral form to participate.

March 15-16. Southdale (3rd level by Macy’s). www.operationglassslipper.org.

Fashion Ball: A benefit for Ballet of the Dolls and a runway show with a mix of high fashion, performance and costume.

8 p.m. March 21 (show only, $35-$150; gala, $100-$1,000). Ritz Theater, 345 13th Av. NE., Mpls. www.ritz-theater.org.

Arena Bikini Cherry Bomb: The launch of the bikini season begins with local designers unveiling their sexy retro creations.

7:30 p.m. March 21. $45-$125. Aria, 105 N. 1st St., Mpls. Arena-dances.org.