Irina Shayk, 30, and Bradley Cooper, 41, are expecting their first child, according to reports.
In one of her looks on the underwear-clad catwalk, Shayk kept her midriff slightly covered in a beaded fringed wrap.
The couple began dating in April 2015.
It's been a week of surprise pregnancy news in the celeb world: Amanda Seyfried revealed her baby bump on Tuesday.
USA TODAY has reached out to reps for Cooper and Shayk.