I mean my friend needs to act in a performance and she need to act as a pregnant lady. She needs some help in making the belly into like 2 months and 8 months belly.

How convient? I just did a skit for my speech and drama class and I had to be that pregnant lady Christie from Romy and Michele's High School Reunion. This is what your friend should do. Go out and buy those Micro-bead pillows (I had a square one and it worked fine with me). I had a small one about like 12'' by 12'' and I stuck it in a dress and I looked 8-9 months pregnant. It looked so real. I stuck a pillow in a dress. So if she can get a smaller pillow like that for the 2 months one.