Mystery has surrounded the identity of the brunette beauty – who was spotted enjoying a day at the beach in Malibu with the 50-year-old funnyman in late September.
But RadarOnline.com can reveal that the 26-year-old stunner, who left Ireland with nothing but a beautician certificate, has the Mr. Popper’s Penguins star smitten.
“Jim and Cathriona have been dating for over a month now,” a source revealed.
“She comes from a very small rural village in County Tipperary and left Ireland for Los Angeles after studying to be a beautician.
“Cathriona is ambitious and is working as a make-up artist in Hollywood – and she’s already worked on many film sets since arriving in the States. She’s very focused on making this work and will do anything she can to make sure she’s successful.
“And dating Jim certainly can’t hurt her career. His status will certainly give her a leg up in the industry and open doors for her that could have been more difficult if she didn’t know him.
“She’s definitely living in a dream world right now,” the source concluded.
As RadarOnline.com previously reported, a topless and chiseled Carrey looked very pleased with himself as he sipped drinks with his much-younger girlfriend in the L.A. sun last month.
The pair took a romantic stroll along the beach arm in arm and later went for a dip in the ocean to cool off.
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