There is no particular dress code for the classes. However, there are other necessities every student has to follow otherwise. The regulations include wearing shirts and denim for the labs of the electrical department.
Girls of the class are asked to go by the same rule, including rolling their hair up and wearing recommended shoes. While working in labs, lab coats are a must.
In any case whatsoever, since it is an educational premise, every student is generally asked not to wear dresses that can be deemed inappropriate.