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Hollywood didn't prepare Kate Beckinsale for one crucial role: being the mother of a teenage daughter.

"I haven't been embarrassing [to somebody] before," the "Total Recall" star told Allure magazine. Though she smolders on the cover of the August issue, she revealed that Lily, her 13-year-old with ex-boyfriend Michael Sheen, isn't impressed. "I can't dance at a party where there are teenagers without [them] clearing the dance floor," she said.

Beckinsale joked, "Those are the things that make me go, 'F**k, I'm old' … When you're a parent, everyone leaves."

But the 38-year-old actress is alright with the other joys of aging.

"What is it about a woman being in her late 30s that brings out the 'Oh my gosh, are you worried?' questions?" Beckinsale said. "Worried? What about? 38, 39, 40, 50! Great! Still alive!"

Still, she's thankful for what she's got. "I haven't suddenly gained 20 pounds that won't go away, or [grown] a beard," she said. "That probably will happen, but it hasn't yet."