Drew Barrymore and Her Baby Bump Make Their Red Carpet Debut!

Stas hit the town with her husband-to-be at the NYC Ballet's 2012 Spring Gala

Drew Barrymore may not have confirmed her pregnancy just yet, but she can't hide that mother-to-be glow.

The 37-year-old Going the Distance star was beaming as she attended the NYC Ballet's 2012 Spring Gala with fiancé Will Kopelman at Lincoln Center in New York City Thursday, putting her growing bump on display in a flowy white Chanel dress.

While Barrymore has stayed completely mum about her baby bump (leaving us almost clueless as to how far along she is), we do know the soon-to-be-wedded duo is set to tie the knot in less than a month at Barrymore's Montecito estate June 2, before she delivers.

"She wants to get married before her bump gets too big, but it's important to her to marry before she gives birth," a source told E! News. "Drew and Will have spent a lot of time talking to his family about ways to make the ceremony special."

The baby will be the first for Barrymore and Kopelman.

Perhaps she'll be inspired to make an annoucement on Mother's Day?