© RD / Kabik / Retna Ltd. 1 / 15
© RD / Kabik / Retna Ltd. 1 / 15

Holly Madison is on the mend.

Nearly seven months pregnant with her first child, the former "Girls Next Door" beauty, 32, was hospitalized on Dec. 3 for complications due to morning sickness, she confirmed via Twitter.

PHOTOS: Inside Holly Madison's Disney babymoon

"Almost seven months and morning sickness took hold! Glad to be otherwise OK, though," Madison tweeted, along with an Instagram photo of the Converse sneaker clad mom-to-be with an IV in her arm.

As supportive messages from fans poured in, the expectant mom assured Twitter followers her health was improving. "Thank you for all the get well wishes! Keeping me entertained -- forgot to bring a book with me," continued Madison, who's expecting a daughter with her Electric Daisy Carnival founder boyfriend, Pasquale Rotella.

PHOTOS: Holly's sexy 'Girls Next Door' days

Madison is not the only celebrity mother-to-be faced with a nasty bout of morning sickness this week. On Dec. 3 -- the same day her first pregnancy was confirmed, Duchess Kate, 30, was admitted to King Edward VII Hospital in Central London to receive treatment for hyperemesis gravidarium.

PHOTOS: Royal pregnancies

Affecting between 0.03 to 1 percent of expectant mothers, HG is characterized by severe nausea, vomiting, weight loss, dehydration, lightheadedness and fainting. Treatment typically includes hydration, bed rest, and in some cases like Middleton's, hospitalization.


Royal Stork News: Will and Kate Are Expecting Their First Child

Year in Review: Celebrity Babies of 2012

See What Holly and More of Your Favorite Celebs Are Up to This Week