By Meghan Overdeep
Updated Dec 03, 2015 @ 11:00 am
Credit: Kevin Mazur/WireImage

Chrissy Teigen's flawless maternity style just won't quit. The mother-to-be and her husband John Legend were all smiles on Wednesday at the Encore Theater at Wynn Las Vegas for Sinatra 100, an all-star musical celebration of Frank Sinatra's 100th birthday. The happy couple was dressed to the nines for the affair, looking positively radiant as they posed backstage for photos.

Teigen glowed in a formfitting gold minidress with intricate geometric beading and long sleeves. The gilded ensemble's snug silhouette highlighted her long, lean legs and her growing baby bump, while complementing her honey complexion.

Alicia Keys was among the group of A-listers in attendance who stopped to pose—and in her case, sneak in some belly time—with the duo. Who could blame her?

Credit: Lester Cohen/WireImage