Never mind that they're on America's best-loved hit TV show at the moment.

Superstar singer & actress Mandy Moore's TV children and grandkids from NBC's This is Us are adorably thrilled to know that she played Disney princess "Rapunzel" in Tangled.  

She'll continue as the voice of Rapunzel in a second Tangled movie airing this month, and Tangled: The Series, premiering on NBC on Mar. 24.

Watch their super-cute reactions at the link below!

Mandy Moore's TV kids more excited she's a Disney princess