You can double major at Bryn Mawr, but most majors require a senior thesis, so be prepared to work on some sort of combined thesis or write a different thesis for each semester of your senior year. There are some exceptions (sociology, math, French, and a few others) where the thesis is optional. Bryn Mawr students really pride themselves on completing the senior thesis as a sort of capstone accomplishment. Here’s more info on double majoring: http://www.brynmawr.edu/deans/major/doublemajor.shtml