Waitress
(2007)

When Jenna (Keri Russell) first lays eyes on her newborn daughter, Lulu, she's filled with love for the baby, and this love inspires her to do the following:

1. Leave her no-good husband, Earl (Jeremy Sisto)
2. Break up with her married lover, Dr. Pomatter (Nathan Fillion)
3. Enter and win the pie-baking contest
4. Use her winnings from the contest -- and a hefty check from dying Old Joe (Andy Griffith) -- to buy the diner and rename it Lulu's.

 Thanks Adam!