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Holly Madison - Instagram

Instagram.com

Morning sickness: It's not just for royals.

Hours after it was revealed that Kate Middleton was hospitalized in Britain with hyperemesis gravidarum (aka a severe case of the a.m. pregnancy blahs that can result in dehydration and malnutrition), Holly Madison tweeted from her own hospital bed.

"Almost 7 months and morning sickness took hold! Glad to be otherwise ok, tho," the Peep Show star wrote, also showing off a picture of her IV.

"Thank you for all the get well wishes! Keeping me entertained-forgot to bring a book with me," Madison added.

The 32-year-old celeb is expecting her first child with boyfriend Pasquale Rotella.

Just yesterday, Rotella excitedly tweeted, "We graduated!! #InfantCPR #BabyBabyWakeUpTapTapTap #YouGoGet911 #safebaby #babyChoking #alivebaby #babyfest" and posted pics from what was apparently his and Madison's successful completion of a child-safety course at Belly Bliss.

We hope the mommy-to-be feels better soon!