to decorate something in order to improve the way that it looks, especially in a way that other people think is ugly
Synonyms and related words
To make someone or something more attractive:decorate, adorn, enhance...
a.
to try to hide the fact that something is bad by showing or describing it in a positive way
Synonyms and related words
To exaggerate and overstate:aggrandise, aggrandize, exaggerate...
2
if a woman tarts herself up, she tries to make herself look more attractive, for example by wearing nice clothes. This expression is often used for showing that you think a woman has made herself look less attractive.
Synonyms and related words
To make yourself look more attractive:groom, preen, doll up...