The National University of Sciences and Technology (NUST) made it compulsory for female students to wear dupatta and imposed a ban on wearing jeans in the university premises, the Dawn reported citing sources.
The NUST authorities, however, denied the report, saying they only instructed the students to wear "decent" dresses, the report added.
According to a notice posted on the university notice board, at least seven students were fined for not wearing dupatta or wearing jeans.
Some girls were fined Pakistani Rs.500-Rs.1,000 for the offence, the report said.
It added that the university's style of functioning was very strict as all important administrative posts were held by retired army officers.
"Male and female students are not allowed to sit together and they are fined for violation. Teachers and students know that they will be fired and rusticated if they do anything against the will of the administration," the Dawn report quoted a faculty member as saying on condition of anonymity.