Oops -- make that 26 dresses.
Katherine Heigl's dress came undone at Thursday's ShoWest awards in Las Vegas Thursday, RadarOnline.com has learned, as the 27 Dresses star was delivering a victory speech after receiving an award honoring her efforts during the past year.
The newly brunette beauty was clad in a silky red dress when one of the straps came undone. She regained her wits, holding it up until the show's host, Billy Bush, gave her a helping hand as she finished her speech.
"Oh my. Hosting showest awards in LV. Heigl comes up to get award, dress strap breaks... I hold her top on while she accepts!" Bush Tweeted after the show. "I fought some adolescent instincts."
Heigl's next film, Killers, hits theaters June 4, 2010.