Q. Can a woman get dressed up with men’s clothes as a Purim costume?
Can a girl get dressed with a costume that is half woman in front and half man in the back?

A. Rema (O.H. 696: 8) permits on Purim for men to wear women’s clothing and vice-versa, since it is done only for creating joy and simcha. However Mishna Berura (30) quoting Bach and Taz, prohibits doing it.

Horav Shlomo Miller’s Shlit’a opinion is to to be stringent in every case.

Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a