The Hills Season 4 Promo Episode 18

The Hills Season 4 Promo Episode 18 and here's a glimpse from the show

Audrina Patridge is contemplating living with that loser for some reason, while Heidi Montag gets another crack at her job, Whitney Port keeps in touch with Jay Lyon in NYC, and Lauren Conrad ... is just sort of there. But so pretty!
Brody advises Lauren to drop Audrina as a friend. Spencer tries to turn his grandmother against Stephanie. Lauren and Audrina discuss their relationship.

It's near the end of the show I believe. A girl sings it and it goes something like "I got a pocket, got a pocket full of sunshine..... take me away to a better place.." Something along those lines. Anyone know the title of that and who sings it?!