The Late Bloomer - Gauche Girl series, #1

Gabby the Goat girl, the first in her family to go off to university, hopes to shed her moniker with the help of a 1960s beauty book. With the input of three roommates, she makes over her appearance and works on her soul by joining a campus-wide service club. But when the hot and popular Lincoln Patterson asks her to lead a group  competing to raise the most money for a charity, Gabby feels out of her league.
What will happen when her biggest competition is her ex, who constantly reminds her she can't change. Can she stand up and prove him wrong? Or will she shrink and return to her old self?