Photo: Axelle Woussen, Bauer-Griffin

At a recent store opening party, we found ourselves face to face with Miss USA Kristen Dalton (shown) as we both waited for a drink at the bar.

We approached Dalton ready to girl talk about beauty queen tricks like last-minute teeth whiteners and thigh-slimmers, but were instantly distracted by her SERIOUS eyelashes.

"Are you wearing false lashes, or is that just a really good mascara?" we asked.

"Really good mascara," Dalton replied.

Um, what? Do you see her lashes?

It turns out, she was wearing L'Oreal Voluminous, which seems to be a celebrity staple--Kelly Rowland of "Destiny's Child" and actress Malin Ackerman of "Couples Retreat" both rely on the same product for standout eyes.

Want to know what other drugstore products celebs are using? Just click through our gallery below!