It doesn't have to be based on the world beauty standard, in which case many of mine would fall behind (I ranked this in the romance writing thread.) Rather in your opinion, or the opinions of people in your story, whose opinions you wrote. Lol
I'll just describe mine in reference to how other people see them.
Damsel in the Red Dress
Kattar is crazy hot, lol. Since Jr. High girls have always been crushing on him, trying to get his number, etc. And even before then, his mother's friends were always commenting on how she was so lucky to have such a beautiful child. (And believe me, the constant fawning over and doting on him that everyone has done the whole time she's known him annoyed Alicia to no end.)
Alicia is very pretty herself, but she didn't know that for a long time. Her parents, parents' friends and relatives always said she was such a pretty little doll, but she just assumed it was because...well that's what people you know do. She never read into it. Then after her parent's divorce when she went to live with her aunt, she got pretty depressed, not to mention that she only had shabby, hand-me-down clothes to wear. She didn't care a lot about her appearance, and while most people didn't care enough to comment on it, the people who did comment on her looks were usually telling her she looked shabby/homeless (in the case of her cousin) or to smile and she'd look prettier (in the case of her aunt, who wasn't trying to be mean, she was just tired and had no time to think about what she said.)
That said, Kattar had a teeny tiny crush on Alicia from the first day they met, despite her looking kind of shabby and grungy, and his mother could immediately tell how pretty she was as well. (Kattar's crush just grew overtime until it could definitely no longer be considered a "crush.")
Add that to the fact that his mother's friends, who had no reason in particular to want to be nice to Alicia, would comment on how jealous they were of how pretty she was, and the fact that an artist as egotistical as Etan wanted to date her, Alicia's pretty gorgeous. She doesn't get hit on nearly as much as Kattar did, but that's fine because she wouldn't be able to brush it off nearly as well as he can. Most guys are just more careful about those things than girls need to be, so they appreciate her beauty from an appropriate, non creepy distance. She was however hit on by one of Kattar's nurses.
Alicia as drawn by me (for an upcoming dtiys challenge)

unfortunately I don't have a picture of Kattar TT