An 18-25 year old MILF that every man would like to fuck, a fine piece of ass.
Dude 1: Yo dawg, did you see how hot Gisele is looking today?
Dude 2: Yeah bruh, she is a milfette.
the product of a milf, or a milf-to-be
any hott chick you that isnt an adult yet but definately has the potential to become a milf later on would most certainly be a "milfette"