It appears that Rumer Willis could learn something about fashion from Stacy Keibler. The former WWE star attended ELLE's 5th Annual Women in Music concert celebration earlier this week wearing a sexy, black cut-out dress that showed just a hint of her baby bump.

Willis also attended the same event in a cut-out ensemble, only hers was a bit of a wardrobe malfunction.

Keibler and her businessman husband Jared Pobre announced the pregnancy news last month. The baby is due this summer.

She will be featured in People magazine's "Naked at 34" feature, which was inspired by a recent study that suggested women feel best about their bodies at that age.

Keibler told the magazine: "Being pregnant really gives me a confidence I didn't even know I had. Just yesterday, I asked my husband, 'What do you love most about my body?' and he said, 'Your growing belly.'"

Keibler famously dated actor George Clooney before pairing up with longtime friend Pobre.

Check out more photos of Stacy...