The Girls Next Door star Holly Madison and Playboy founder Hugh Hefner still have babies on the brain.

“There has been lots of trying â€" lots of trying!” she told Usmagazine.com at Playboy’s Ninth Annual Super Saturday Night bash in Arizona.

Hefner was tight-lipped when asked if they have plans to tie the knot.

“There will certainly be a lot of romantic years ahead, but a wedding we will see,” he told Us.

Next up for the two: Valentine’s Day.

“We are just going ...