Really Hot girl
One who is actually hot and doesn't wear undergarments and shows this in an unsluttish way, and protects her assets in the process.
Really hot girls: the ones who's breasts look nice, supported, plump, & perky in tank/sexy top, no droopy saggy. Also who wear tights/sexy pants skirts ,etc. that show enough while revealing a nice tight ass, no flat, saggy, droopy.
A really hot girl
Used to name a female who, in the opinion of the user of the word, seems to be extremely attractive and pleasuring to look at.
Katie: So, Alexander, what do you think of me?
Alexander: Well, Katie, I think you're A really hot girl
Katie: Oh well thank you so much Alexander. Maybe you would enjoy making out with me.
Alexander: Well of course
Alexander: Well, Katie, I think you're A really hot girl
Katie: Oh well thank you so much Alexander. Maybe you would enjoy making out with me.
Alexander: Well of course