Hollywood actor Ashton Kutcher was caught hooking up with a young blonde woman.

The hunk was seen making out with the woman at Madeo restaurant in Los Angeles, reports Star Magazine.

Kutcher, 32, is married to Demi Moore, a brunette 15 years his senior.

According to an onlooker Kutcher and the 20 something gal were going at it hot and heavy in public.

"Ashton had this gorgeous girl pinned against the wall, and he was totally making out with her," Fox news quoted an onlooker as saying.

"I was shocked to see him sucking face with a girl who obviously wasn't Demi," the onlooker added.

However, Kutcher's rep has denied the report.

Demi Moore has not yet commented about the report. (ANI)