Is it wrong to use your Altar Server vestments for a costume?

Example, you're an altar server but you need to use you're cassock or alb for a costume since you will dress up as a Priest for let's say some roleplay or movie

Because that's what my classmates are planning, they want me to play as a Priest in a roleplay in our class and they know I'm an altar server so they want me to use my cassock for this occasion, is it fine to use it as a costume? especially if my academic performance depends on it?

(and yes, the cassock is blessed by a Priest and I don't think my Parish has a cassock that is not blessed, I don't think I can even order or find one just for a costume for school purposes due to the time period of our roleplay project)

(another note: the roleplay is basically El Filibusterismo, a famous Filipino book written by Jose Rizal, my role is Padre Florentino)