The only rule is there is no rule.
I am 5'7" and 225. I was 146 for like forever, then I got married and was over fed

I have large upper leg mass though. It isn't fat it is muscle. Muscle as we all know ways more.
So if you are very physical fitness, you need to remember, you want to Richard Simmons your self, not Arnold yourself.
My sister routinely complains about weight. She is drop dead good looking, but she works out a lot. Probably weighs 20 pounds more than she might just from muscle. Like I say, gorgeous, but when walking with her boyfriend, it is my sister the attacker better avoid hehe.