Jenna Elfman and Fik-Shun Photo

From: Photo Flash: SYTYCD's tWitch, Allison Holker and Alex Wong Host National Dance Day Celebration in NYC

So You Think You Can Dance (SYTYCD) husband and wife all-star dance duo tWitch and Allison Holker, along with SYTYCD All-Star Alex Wong, led a thousand in NYC's official National Dance Day celebration at The Lincoln Center on July 26th. Scroll down for photos from the festivites!