Nicole Richiewears many hats — she’s a designer,television personality andHollywood socialite. But all her jobs pale in comparison to her role as a mom.

In fact, theHouse of Harlowfounder is skippingNew York Fashion Weekto be with her 10-year-old sonSparrow James Midnightand 11-year-old daughterHarlow Winter Kate(whom she shares with husbandJoel Madden) duringback-to-schoolseason.

“I’m flying out right after this. I’ve got first-week-of-school [stuff] to attend to,” Nicole, 37, told PEOPLE at the launch of her#NicoleXCapsuleChix collectionwith Moose Toys in New York City’s Soho neighborhood last week. “I volunteer there. I’m all in.”

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Nicole Richie

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Nicole Richie

Nicole Richie (L) and Joel Madden.

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After a relaxing summer break, the star says she and her family are “excited to get back into the swing of things” but admits that this time of year is “not calm at all.”

“I’m flying home [to Los Angeles] to put my mommy shoes on,” Nicole, who’s Capsule Chix collection celebrates individuality and confidence, jokes.

And what is her best time-saving hackduring back-to-school madness? “I’m all about meal prepping,” she tells PEOPLE. “To me, meal prepping changes your life.”

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The Candidly Nicole star adds that her big family — including Joel’s brother andGood CharlottebandmateBenji Maddenand his wifeCameron Diaz— chip in when it comes to caring for the kids: “It takes a village.”

Nicole grew up in the public eye as the famous daughter ofLionel Richie, but she keeps her own kids out of the spotlight — and shedoesn’t share photos of either childon social media.

Why? Says Nicole, “They’re busy being kids.”

source: people.com