Police were called to the Nordic Hall at 13th and Dakota just before 2:30 this morning.
Officers found two women injured.
Witnesses told police that one of the women had a knife and cut the other's nose.
The victim was taken to the hospital... she's expected to recover.
The suspect was also checked-out at the hospital before being taken to the Minnehaha County Jail, charged with aggravated assault.
A fight between two women turned into a stabbing in Sioux Falls early this morning.