Hugh Hefner knows a thing or two about multiples.

So it's worth noting that the Playboy founder doesn't merely believe that The Girls Next Door star Kendra Wilkinson is getting a spinoff; he thinks all three of his main girlfriends will soon have their own series..

"I think all three girls are likely to get spinoffs. I think they will be interconnected to the main show, and we will all appear on both," Hefner told E!

Which Girl Next Door would you most wanna see in her own spinoff?

For now, however, the popular bedroom buddy and his gal pals have other things to think about, such as the October 5 premiere of season five of The Girls Next Door.

"It's amazing. We're about to launch season five," he said, adding, "We thought it would be a one-season wonder."