Hi Andrea, and welcome to BSP!
There are quite a few Beta chapters out there that cater to the needs of 20-somethings. In fact, we've had several friendly ventures here on GC with younger members, so you're not alone! BSP is a great sisterhood.
Good luck in spreading the good word of Beta Sigma Phi around to our younger members. You are the future of BSP, and we depend on you to keep the organization going.
