messerbirth230.jpg Break out the bubbly!

Teen Mom star Leah Messer-Calvert just gave birth to her third child - a daughter - this morning.

"Leah gave birth in the early hours of this morning (Feb. 4) to a beautiful baby girl. Mother and baby are happy and healthy. Leah went into labor late last night, and the baby was born this morning," a close family friend told In Touch.

The 20-year-old has 3-year-old twins Aliannah Hope and Aleeah Grace from her previous marriage to Corey Simms.

Messer married Jeremy Calvert in the spring of 2012, and learned they were expecting their first child together a short time later.

Now we just need a picture of the little one and a name!