The 30-year-old former "The Hills" star revealed the news in an interview with Us Weekly published Wednesday.
"I'm not the best at surprises," Patridge admitted. "I told my family while I was still in the ultrasound room! I had to send them pictures and videos instantly."
"We're so excited!" she added. "Corey can't wait to teach her how to surf. We are so excited to meet her. She already has a personality kicking around in my belly."
Patridge and Bohan got engaged in November after seven years of dating and announced the star's pregnancy the next month. She shared the news by showing off her pregnancy test on social media.
"I asked [Corey] to have a look at the test and make sure I wasn't seeing things," she told Us at the time. "You never really expect it to say 'Pregnant.' He had a big smirk on his face and was really happy about it."
Patridge and Bohan's daughter is due in the summer and the couple will marry at the end of the year. Patridge said she is working out and eating healthy in preparation for the baby and using Pinterest to find wedding ideas.
Patridge came to fame on "The Hills" and later competed on the eleventh season of "Dancing with the Stars." She also starred on her own short-lived reality series "Audrina," and was made the new host of NBC travel series "1st Look" in 2014.
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