The size is a bit small.I'm 173 and I took the Large. Had a hard time closing the zipper on the back since it's so tight. So I hope it wont rip while dancing at a party.But it does look nice on the body.
The red underpants are a bit high, would have liked it more if the belt was lower so it will look more sexy and less like grandpa's briefs ;)
And it will be a problem to pee at a party so i might saw a zipper below the red briefs. and you will need some red shoes over the feet.
All in all it looks like a great superman costume!