The 36-year-old, who also shares 3-year-old daughter Rainbow with her husband, Pasquale Rotella, smiled in a form-fitting maroon dress, which featured ruching around her baby belly.
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In The Vegas Diaries, Madison’s second memoir about her time in the Playboy Mansion, the star describes being a “shy violet” – something she recently told PEOPLE she doesn’t want for her children.
“I want Rainbow to learn to be verbal and stand up for herself. If I could go back, I’d be a lot more outspoken,” she told PEOPLE. “I wouldn’t have allowed myself to be made to feel less than.”
WATCH: Holly Madison Reveals She’s Expecting…a Boy!
And being a mother of two? Madison is cautiously optimistic. “Some people will tell me that once you have your second baby, it’s just as easy as one,” she explained. “Then a friend texted me after I announced my pregnancy [to say], ‘Watch out, two is like three!’ and I’m like, ‘No, don’t tell me that!’ “
— Lindsay Kimble