Watch Ciara and 4 Former Miss Americas Dance Ahead of Tonight's Pageant

The singer is a judge at the 2017 Miss America Pageant.

— -- It looks like one Miss America judge is ready for tonight's competition.

Ciara and four women who previously took home the Miss America crown -- Kira Kazantsev (2015), Heather French Henry (2000), Ericka Dunlap (2004) and a pregnant Katie Stam Irk (2009) -- all showed off their best moves in a video going viral.

The singer shared the video on her social media accounts, with the caption: "Fun times jamming out with these Rocking former Miss Americas! Ow!"

Stam Irk, 30, who is expecting a son with her husband of six years, Brian, wrote on Instagram about the experience. "This baby boy will have SO many fun stories to hear when he gets older!" she said beside a photo of her and Ciara.

Dunlap, 34, called the singer "pure sunshine" on Instagram, sharing another cute photo from the dance session.

Ciara, 30, along with Olympic gymnast Gabby Douglas, actresses Sara Foster and Laura Marano, singer Cole Swindell and former Miss America Sharlene Wells Hawkes, will judge the Miss America competition, airing at 9 p.m. ET on ABC.

The pageant, hosted by Chris Harrison, will see 52 contestants vying for the crown at Boardwalk Hall in Atlantic City, New Jersey.