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After recently opening up about a bout of extreme morning sickness similar to Kate Middleton, a pregnant Holly Madison received some kind words of support from her famous ex, Hugh Hefner.

Video: Holly Madison 'Freaked Out' by Hospitalization

The newly engaged head honcho of Playboy took to his Twitter to deliver the thoughtful message to his former bunny girlfriend.

"I hope Holly Madison is feeling better after being hospitalized for morning sickness in the late stages of her pregnancy," wrote the 86-year-old, signing off his tweet with "Love, Hef."

Related: Holly Madison Reveals Baby's Gender

The mom-to-be spoke to ET this week about her troubling ailment which, seven months into her pregnancy, landed the 32-year-old model in the hospital.

"I was really vomiting a lot during the day, it freaked me out," Madison said. "I was told to go to the doctor and get an IV and everything. So, that was kind of scary to me just because it seemed like something so unusual...but everything's O.K. so far, so that's good."