Robert Pattinson and Kristen Stewart don't have a son but Bella and Edward have a daughter in Breaking Dawn.
Yes Kristen Stewart is going to play Bella in Breaking dawn.
Yes, she will. So far she is also going to be in Eclipse and Breaking Dawn!!
No
Original Answer: Yes. Kristen Stewart has signed a contract saying that she will act as Bella Swan for films New Moon and Eclipse Whether or not there will be a Breaking Dawn film is unclear. My Answer: I heard that Kristen Stewart is not going to do Eclipse because of issues with timing but I think that is just a rumor an it shouldn't be taken seriously. I also heard that she would be in Breaking Dawn since Summit is discussing the possibility of making the movie in two parts
Yes, It is still going to be Kristen Stewart.
Bella AKA. Kristen Stewart has already starred in a few different movies, and will be starring in Eclipse, K-11, and the yellow handkerchief which are all set to release in 2010.
Yes, Kristen Stewart has been contracted for New Moon and is in talks with the producers to sign a contract for Eclipse and Breaking Dawn.
Yes, she does. In the whole twilight saga.
She signed a contract for all four movies along with Robert Pattinson.
No. Kristen Stewart, the girl that plays Bella, has a contract and is promised to play all four movies. Eclipse is already finished, and Breaking Dawn is in production. So she is most definitely playing in the movies.
Kristen Stewart has not had any children, nor is she currently set to have any. Her character Bella had a baby in the final book of the Twilight series.