Lennon Parham stars as Abby, Billie's sister on Accidentally on Purpose.  Thrilled that her sister will be having a baby, Abby is Billie's biggest supporter on the show.

Abby Quotes

Abby: Didn't you use condoms?
Billie: I guess it turns out they're not 100% effective unless you actually take them out of your purse.
Olivia: Billie, Billie, Billie, always use a condom... and an alias

Abby: I mean, look how happy I am since I married Nick. And you know why? Because he is stable, well-balanced, supportive.
Billie: Yes! Nick would make a good chair