Congrats are in order!
"I'm so excited! This time I know what to expect a little bit more. [That] makes it even more enjoyable!" The 36-year-old former "Girls Next Door" star told People.com.
Holly says her daughter, 2½-year-old daughter Rainbow, was the first person the expectant parents told about their impending baby news.
"She's rooting for a girl," Holly said of her daughter's thoughts on the new addition. "I think she's going to be a good big sister. She's very caring and she loves playing with her baby dolls and taking care of the pets."
The mom-to-be says she's been feeling a boy vibe throughout her pregnancy.
Only time will tell, though, since the family's new addition arrives in August.