an 'ugly duckling' that has become a beautiful swan [=an ugly/unsuccessful person or thing that has become beautiful/successful]
('informal') That dog of yours is '(as) ugly as sin'. [=very ugly]
The house is an 'ugly duckling', but it has a lot of potential.
(..) I just kind of always wanted to be a bridesmaid, and I... I don't know if I'll ever get another chance. I mean... my sister's just so ugly. All right, Dina... you can be a bridesmaid. Yes! Oh! You will not regret this. Okay, I'm gonna need to see (..)2017 TvShow: Superstore Title: Cheyenne's Wedding Season: 2 Episode 20