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Aliannah and Aleeah need to get ready for a sibling and a stepdad!

A source tells Us Weekly that Leah Messer of "Teen Mom 2" is engaged to Jeremy Calvert.

VIDEO: Leah talks about her relationship with Jeremy

"Leah just got engaged over the holidays and is pregnant with another child," the source says. "She is so excited!" 

PHOTOS: 'Teen Mom 2' tots: My, how they've grown!

Messer, 19, was married to Corey Simms (who is the father of her 2-year-old twins) for just six months last year before filing for divorce in April. 

VIDEO: Most shocking moments of 'Teen Mom 2'

The MTV reality star told Us last month that she and Calvert "do talk about getting engaged."

"We have a really good connection," she gushed. "It's different from Corey and my relationship, because we were kinda like forcing it. ... With Jeremy, you know when you're supposed to be with somebody and you're not."

According to Heather Clouse's blog TeenMomTalk.com, the couple spent Dec. 23 with the twins and had "Christmas Eve-Eve celebration at Grandma’s house full of yummy food and bedtime stories! When they woke up this morning, Santa had dropped off gifts a day early!"

So what did Aliannah and Aleeah get from Santa? "They got dolls, strollers, and just about anything else a 2-year-old girl could possibly want," the site said.


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