Denise Richards and Charlie Sheen’s daughter Sami, 18, pairs bikini with Santa hat

You’re a mean one, Mr. Grinch.

Charlie Sheen and Denise Richards’ 18-year-old daughter, Sami Sheen, celebrated Christmas by posing in only a white bikini, matching furry moon boots and a red Santa hat on social media.

Sami shared the flirty yet festive snaps on Instagram Tuesday with the quippy caption, “The Grinch stole my clothes this year.”

The Los Angeleno made like Kendall Jenner while on vacation in Whitefish, Montana, and sparked plenty of saucy comments with her skimpy look.

You cold doing that?” one fan asked. “We should all thank the grinch,” another wrote.

Sami joined OnlyFans earlier this year, teasing her new venture with a sultry pool snap worthy of her mom’s movie “Wild Things.”

Dad Charlie, 57, originally slammed his daughter’s decision to join the sexy subscription-based social platform, telling Page Six in June, “She is 18 years old now and living with her mother. This did not occur under my roof.”

Added the “Wall Street” actor, “I do not condone this, but since I’m unable to prevent it, I urged her to keep it classy, creative and not sacrifice her integrity.”

Denise, 51, supported her daughter’s decision, telling us at the time, “All I can do as a parent is guide her and trust her judgment, but she makes her own choices.”

In fact, the former “Real Housewives of Beverly Hills” star went on to join OnlyFans herself, just one week after Sami’s debut — and with her teen’s support.