Pretty, genuine and intelligent girl names?

It's for my story, I need a name that's simple for a girl who would be in harvard? Which name is better ? + I need a boy name, something for a hot guy, whos smart? Thanks :) Last and middle names would be great too :)

holly
savannah
charlotte
kate
scarlett
haley
summer
Emma
Update: Also if you have better names let me know, and the girl is posh , but she is also really down to earth and genuine thanks :)
Update 2: Now I'm down to two names for girls, and still not sure about the boy, but the top two girl names are finally down to summer and holly! Which ones are better and tell me why they are better than the other thanks soo much :)
13 answers 13