Christina Aguilera Vagina Spa

Dr. Lauri Romanzi, a gynecologist who performs pelvic reconstruction surgery, said she came up with the idea for the spa one day while walking by an outlet of BriteSmile, the tooth-whitening chain. She liked that the stores cater to people with healthy teeth.

The spa is essentially a gussied-up examination room down the hall from Dr. Romanzi's medical practice. At the spa, the signature treatment will be a $150 gynecological exam -- in which a client contracts her pelvic muscles around Dr. Romanzi's fingers -- to determine by feel whether muscle tone is weak, moderate or strong.