First shots of Teen Mom 2 star Leah Messer showing off her growing baby bump on October 28, 2012. Credit: Splash News

Now that she's officially shared her happy news with the world, Teen Mom 2's Leah Calvert is ready to show off her growing baby bump.

MTV star Calvert (nee Messer) did just that at a West Virginia playground recently, where she spent time with her 2-year-old twins Ali and Aleeah.

For her outing, Calvert, 20, donned skinny jeans and a tight, sheer brown t-shirt that showed off her burgeoning belly.

Calvert exclusively confirmed that she's expecting her first child with husband Jeremy Calvert this winter to Us Weekly Oct. 23.

"Jeremy and I are excited to be adding a new addition to our family," Calvert told Us. "Being a teen mom was difficult, but I'm older and in a different place now -- married to Jeremy and excited for our family to grow."

The reality starlet filed for divorce from her first husband, Corey Simms -- father to Ali and Aleeah -- in April 2011. She tied the knot with Calvert one year later in Catlettsburg, Ky.