Hilary Duff is having some fun with her baby (due any day now), thanks to a new Funny or Die video that pokes fun at pregnancy hair growth. (PHOTO: Screen Capture / funnyordie.com).

Hilary Duff's baby may be due any day now, but that hasn't stopped the singer and actress from poking fun at her own pregnancy, thanks to a new video with Funny or Die.

In the video, called Hilary Duff's Pregnancy Secrets, the 24-year-old expectant mama reveals that pregnancy causes morning sickness, weight gain and tons of body hair . . . SERIOUSLY hair everywhere.

After I got pregnant, my hormones caused so much hair growth that I felt like a yeti . . . or, Robin Williams, Duff explains in the video, which is a fictional infomercial for the No Grow Activ system, from the makers of Proactiv.

The video goes on to show Duff's past attempts at getting rid of her hair growth -- electrolysis, plucking and daily waxing of hair on her pregnant belly.

Eventually, I'd had enough, so I called and ordered No Grow Activ. And in just 30 days, I said goodbye to all the unwanted back hair, unattractive lady mustaches and unmanageable knuckle hair, she adds.

Duff is expecting her first child (a boy!) with husband Mike Comrie. The couple, who has been married since August 2010, first announced their baby news on their one-year anniversary last summer.

I can't believe it has already been a year, time really flies when you're having fun! We also want to share the exciting news that . . . BABY MAKES THREE!!! Duff wrote on her Web site at the time.

Just last week, Duff and Comrie were spotted dining in L.A., and the meal wasn't light. The couple reportedly ordered butternut squash gratin, a 26 oz. steak, a whole chicken and a large ice cream Sunday, according to People.

Scroll down to watch Hilary Duff poke fun at her own pregnancy (and hair growth) in this video, courtesy of Funny or Die.

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