Here's my idea

Ok so modern dia 2012 A girl who is an actress 13 years old starring in a princess mover

Then you have another girl who is really pot living on the streets

One dia the girl becomes really upset and storms off set and runs into a begged and the girls learn that they look exactly the same
A big musical seen about the actress girl singging about the values of a movie and why she loves them so much
The begged girl sings about how she wants to be a doctor

The actress girl gives the girl one of her outfits out of pity as begger girl leaves people try to interview her and ask her perguntas
Actress girl still startellin that the girl looked exactly like her watcher the news only to find out what happened
While begger girl is pushe on set wile she is atuação terribly then the actress girl barges in only to find everyones starring at her tying to figure out what's going on
And that's all I've got so far

Looks: they pith have short dark brown hair and glasses with really pretty faces they are African American

Names : I'm thinking emberlyn aka ember and Emily what do you think