updated 07/28/2011 AT 4:00 PM ET
•originally published 07/28/2011 AT 1:00 PM ET
There’s only one rule when hooking up with Hugh Hefner in the bedroom: There are no rules – or so reveals Miss June 2004.
“I’ve heard girls say they have a lot of fun in there,” says Hiromi Oshima, a Playmate who spoke to PEOPLE during Playboy TV’s “TV for 2” party Tuesday night at the Playboy Mansion.
In fact, many Playmates were quick to defend Hefner after his ex-fiancée Crystal Harris said on Howard Stern’s radio show that her only sexual encounter with the 85-year-old Playboy founder “lasted