Dax Shepard is celebrating Kristen Bell in a cheeky way.

The actor, 46, took to Instagram on Mother’s Day to honour his wife, 40, with a NSFW photo of the actress wearing nothing but knee-high socks.

“Mom’ing has changed since I was a kid… and I’m here for it,” he joked.

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He added, “Look at this specimen: kind, patient, nurturing, hilarious, Uber talented, generous, hard AND soft. My girls and I hit the MegaMom Lottery in spectacular fashion. We are so grateful and so in love with you @kristenanniebell.”

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Bell later thanked her hubby for the “best Mother’s Day” on her Instagram story.

The couple tied the knot in 2013 and share daughters Lincoln, 8, and Delta, 6.