Pregnant Teen Mom star Catelynn Lowell showed off her baby bump at 33 weeks via Instagram

Baby girl ???????????? almost 33 weeks ????????

A photo posted by Catelynn Lowell (@catelynnmtv) on Nov 11, 2014 at 2:42pm PST

It's almost time! In anticipation of her baby's arrival, pregnant Teen Mom star Catelynn Lowell showed off her growing baby bump via Instagram on Friday, Nov. 21.

"Baby girl almost 33 weeks," the MTV reality star captioned the selfie. Lowell looked elated taking the pic in front of what appeared to be a bathroom mirror. She cradled her growing belly while wearing a fitted black-and-white top and blazer.

Us broke news in May that Lowell and boyfriend Tyler Baltierra, both 22, are expecting their second child together. The couple, who documented placing their daughter Carly for adoption in May 2009, found out that they were expecting another baby girl during a gender-reveal party back in August.

My man is the best man... he is the world's most amazing father love him with all my heart and soul

Een foto die is geplaatst door Catelynn Lowell (@catelynnmtv) op Nov 11, 2014 at 8:02 PST

The pair called off their wedding in July 2013, but have appeared to be more in love than ever during Lowell's second pregnancy. "My man is the best man," Lowell captioned an Instagram photo of the twosome last month. "He is the world's most amazing father love him with all my heart and soul."