There's a family resemblance between Rapunzel and her parents.

Okay, this one seems pretty obvious. For the audience to instantly know that the King and Queen are Rapunzel's mom and dad they should look alike. Unlike normal families, Rapunzel came first and her parents were designed after her. Technically it would be wrong to say she looks like her parents—her parents look like her.

kimmykattt20000 

Hopefully I spelled your username correctly

-Elsa