Russell Brand is reportedly dating Hugh Hefner’s ex-girlfriend, Holly Madison.

The comedian-turned-actor is said to have met Holly at a party in Las Vegas a fortnight ago and the pair have been hooking up regularly since then, while Russell is based in Las Vegas and Los Angeles, filming Get Him To The Greek.

A source revealed: “Russell has really hit it off with Holly. She’s a big star in the US, which he finds really attractive.

“And his humour makes her laugh all the time. Russell has been making late-night visits to her home in the Hollywood Hills.

“He’s been there three times in the past week.”

Holly was Hugh Hefner’s “number one girlfriend” for seven years until they split up last October.