We polled a slew of celebrities–from Ashlee Simpson-Wentz to Tiffani Thiessen and Julianne Hough–to clue us in on the items they won’t walk out the door without. Check out our video to see who’s addicted to Tic Tacs, who’s always equipped with an “extra-special guitar pick,” and which Mad Men star keeps baby powder on hand at all times, because, he claims, it’s “always good in the clutch.” Tell us: What do you never leave home without?

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Ashlee Simpson-Wentz has never looked sexier, and at the Paris in L.A. party in honor of lingerie designer Carol Malony, the new mom showed off her enviable body-after-baby figure in — what else? — lingerie. “There is nothing like a great set of lingerie,” Ashlee said, showing off a bra by the designer, paired with high-waisted Catherine Malandrino shorts, a tuxedo blazer and Jimmy Choo platforms. “Carol is really detailed and intricate. I love that about her lingerie.” Ashlee told PEOPLE. Among her favorite pieces? The “Fairy Tulle” bra set that she just so happened to be wearing to the West Hollywood party. “The underwear that go with it are amazing as well — [but] only my husband can see. It’s nice for me, mostly, to feel comfortable and sexy,” she continued. And that, Carol Malony says is the philosophy behind her designs. “It’s all about making you feel terrific.” – reporting by Scott Huver