"Teen Mom OG" star Amber Portwood has apparently revealed the name of her unborn child with boyfriend Andrew Glennon in a Twitter exchange with her brother, Shawn Portwood.

Shawn tweeted at his sister to tell her that he has completed his gift for his new nephew. He wrote that he is not going to show it to her, but sent an image of the box.

Amber then replied to the tweet, saying that she could not wait to see it and that "little James," referring to her unborn baby, will surely appreciate the gift.

According to a report by Radar Online, the name James has a sgnificant meaning for Amber and Andrew as it is her boyfriend's middle name. Earlier speculations suggested that Amber would consider naming her son Shawn as it is both her late father ad her brother's name.

Amber is already a mother to Leah, her 9-year-old daughter with ex-boyfriend Gary Shirley. This means that James will be the second sibling for Leah, who is already the older sister to Gary's youngest daughter, Emilee, whom he shares with his wife, Kristina.

In an interview with Us Weekly, she admitted that she was a little frightened when she first found out that she was pregnant with her  second child. 

"I just kind of sat down and thought about it and realized that it was a big step in my life and it was a good thing actually, and I was really happy within 30 minutes," she said. After the first shock of hearing the news, she told Glennon and "it was nothing but happy thoughts," adding that they are both very happy. 

Fans can follow Amber's journey on "Teen Mom OG," which airs on Monday nights at 9 p.m. EST on MTV.