The "Ace Venture" actor, who has a reputation for wild antics on and off screen, wore McCarthy's halter-neck bikini during a stroll with the model, The Daily Telegraph reported Saturday.

The British newspaper said witnesses were shocked by Carrey's feminine attire as he strolled innocently along with McCarthy, who was wearing a more conservative ankle-length dress.

The 46-year-old actor, known for his roles in movies such as "The Mask" and "Dumb and Dumber," has been dating the former Playmate of the Month since December 2005.