Dating Princess Diana: It Don't Mean a Thing (If It Ain't Got That Swing)
You may be required to enter competitive dance contests. Diana isn't strictly ballroom, but she is royalty. It's expected. Being in synch is very important. Super-powered dancing can land you in the hospital if you're not careful.
From DC Comics Presents #9 (May 1979) by Martin Pasko, Joe Staton and Jack Abel