Anyone who's seen Girls Next Door star Kendra Wilkinson nude knows she is not the type to wear frumpy maternity clothes. Or any clothes for that matter.

It's no surprise, then, that she fashions herself a hot mama.

"Maternity clothes are not for me!" the pregnant Playboy cover girl said at the premiere of Transformers: Revenge of the Fallen. "I'll just buy bigger things!"

Wilkinson, who is in her fourteenth week of pregnancy, is just starting to show off her baby bump - "But it looks like you just had a big lunch," her former Girls Next Door co-star Bridget Marquardt said. "You can't tell she's pregnant yet!"

Wilkinson and her fiance Hank Baskett - who are getting married this Saturday at the Playboy mansion - have openly said they are hoping for a son.

Not that a daughter would be the worst thing in the world.

"I want a boy!" Kendra said. "But if it's a girl, that's fine too."

The couple - who now stars on its own E! reality show, Kendra - find out the sex in "a couple of weeks, and "We are so excited for all this," she says.

"We couldn't ask for anything better to happen in our lives. It's time for this to happen," Wilkinson added. "Everybody is like, 'Are you rushing things?' I'm like, 'If we weren't moving too fast then we would be moving way too slow.' This is us."

Besides having her dress altered to fit her "enormous boobs," Kendra, who celebrated her bachelorette party last week, said she and Hank aren't doing anything special to accommodate her pregnancy at their wedding.

"Everything is going on as planned. The only different thing for me is that I won't be drinking. I'll be drinking Martinelli's apple juice!" Wilkinson said.