MTV's Teen Mom 2 star Jenelle Evans stirred pregnancy rumors after she posted photos of herself with a fuller stomach.

Evans, 21, shared the images taken at a party she hosted on Oct. 19 via Twitter. 

Wearing a tight red bandage dress, the petite reality star's stomach appears to have a baby bump just below the black ribbon detail of her sexy mini dress. In one of the photos, she's also standing next to her boyfriend, Nathan Griffin, who complemented her outfit with his own red shirt and black pants.

The image, captioned "boom boom pow," encouraged one of her followers to comment and say that she is "looking about four months along."

The bulge in her stomach also appears in several other photos from the same night.

The reality star already has one son, Jace, 4, whom she had with an ex-boyfriend named Andrew Lewis.

Radar Online reported in June that MTV has confirmed another season of Teen Mom 2. A show insider stated that Evans and her fellow cast members - Leah Messer, Chelsea Houska and Kailyn Lowry - will return for season 5.

"Yes, season 5 is happening," the source close to production told Radar Online. "All four girls are coming back."

Since she first appeared on MTV's docu-drama, which follows teens who had children while attending high school, Evans encountered a list of legal battles and troubled relationships.

In August, she served 48 hours in jail for failing a drug test. Last month, she and Griffin were pulled over by police for driving erratically. Evans confessed to North Carolina police that her boyfriend was speeding because they were rushing home for a specific reason.

According to Huffington Post, when they were stopped by police Evans told officers, "Honestly, we were trying to have sex." She denied that they were attempting to perform the dirty deed while they were on the road.

Tags: Jenelle Evans Teen Mom 2