Jenelle Evans is gearing up for baby No. 2! Multiple sources confirm the Teen Mom 2 star is expecting her first child with her boyfriend Nathan Griffith. The reality star already has son Jace, 4, from her past relationship with ex Andrew Lewis.

Evans, 21, and the part-time underwear model have been dating for several months. Although the star doesn't have custody of Jace (her mother Barbara does), the couple often share pictures of themselves and the baby boy together. In October, the three smiled big for a Halloween snapshot via Twitter dressed up as superheroes — with Evans wearing a tight-fitting leather Catwoman costume.

One month earlier, Evans and Griffith got in quite the predicament with a North Carolina police officer. According to the Huffington Post, the couple were pulled over on Sept. 7 when the trained MMA fighter was caught driving erratically. Their response to the behavior? "Honestly, we were trying to have sex," Evans replied.

Evans — who broke out on MTV in season 2 of 16 and Pregnant in 2010 — has been arrested nine times in three years. Her most recent arrest occurred when she served 48 hours in jail after failing a drug test. Evans smiled for her mugshot after being tested positive for marijuana. See her mugshot here.