Ashton Kutcher and Demi Moore

Ashton Kutcher and Demi Moore (Dave Allocca/Starpix)

Ashton Kutcher is being asked to pay a six-figure sum to a blonde who claims she had sex with him on the same day he and wife Demi Moore celebrated their sixth wedding anniversary.

Sara Leal, 23, is preparing to tell the story of how she hooked up with “Two and a Half Men” star Kutcher, 33, at the Hard Rock Hotel in San Diego last Friday, following a boozy night with his guy friends, according to a report on thedirty.com.

Now Leal has met with Beverly Hills lawyer Keith Davidson, who represented former Betty Ford worker Dawn Holland after she complained Lindsay Lohan attacked her. Holland dropped her claim after settling with Lohan’s camp, reportedly for $25,000.

A source told us, “Sara is talking to multiple media outlets for a deal. She wants $250,000, but the offers haven’t been as high. What she really wants is to get a payoff from Ashton. She has reached out to Ashton’s team.”

Whether Kutcher, 33, can rescue things with Moore, 48, is not known. The pair spent their anniversary on Sept. 24 apart and — both prolific tweeters — have remained silent.

Kutcher’s lawyer Marty Singer, and a manager who reps both stars, refused to comment.

Kutcher was in San Diego and partied with actor Danny Masterson at Fluxx nightclub on Friday, where Leal is alleging he had sex with her at his hotel, according to thedirty.com.

Moore, at a New York event on Monday, appeared thin and gaunt and refused to do interviews. She and Kutcher were last pictured together on her Twitter feed in July. But recently Moore’s posts have been darker. On Sept. 23, she quoted a Greek philosopher, writing, “When we are offended at any man’s fault, turn to yourself & study your own failings. Then you will forget your anger.” On Monday she posted a picture of her face with her eyes closed, and the words, “I see through you.”