Do you look this good in your Calvins?

Nicole Richie shared a sexy photo on Instagram Tuesday, proudly showing off her Calvin Klein underwear.

"Thank you CK I'm feelin' #mycalvins #spon #90s #wheresmarkymark," she wrote along with the cute candid.

The mother-of-two is just the latest celeb to model the famous briefs, which made Mark Wahlberg a household name back in the '90s.

PHOTOS: See What Former CK Underwear Models Look Like Now!

Calvin Klein has taken their marketing to social media by sending their underwear to a number of stars so they can pose in the undies for a selfie and hashtag the snapshot #MyCalvinsFergie, Miranda Kerr and Kendall Jenner are just a few of the big names who have participated in the Instagram event.

It's not surprising that the clothing brand would want Nicole to support their product -- she's become quite a fashion maven!

The purple-haired beauty also is featured in Paper magazine's May issue with the Coveteur, where she talks about everything from her signature style to motherhood.

"My idea of being a grown-up was living behind a white picket fence and changing who you were -- getting a bob and wearing beige, but I found freedom through my brand and being myself and being able to do it my way," she tells the mag. 

Nicole also talked about how her daughter influences her design decisions.

"Harlow’s interested in what I do, and I’m going to bring her in and show her. But more importantly I really respect her eye," she explains. "Nobody knows kids better than an actual kid. So I’ll be using her eye when I move into kids’ apparel."

Judging from her "House of Harlow" collection, her kids' line would be adorable!

To read Richie's full interview, check out Papermag.com, and click "Launch Gallery" above to see more sexy celebrity TwitPics. 

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