Little Girl Singing 'Let It Go' Makes Jennifer Lopez Cry on 'American Idol'

Plus, which past 'Idol' stars make the most money?!

American Idol contender Hope is quite possibly the cutest contestant in the Fox singing competition show’s history.

And while she isn't quite of age to compete for real, she sings her heart out for the judges in a new season 14 teaser – and her adorable rendition of Frozen’s "Let It Go" moved Jennifer Lopez to tears. Watch the video above to see J.Lo get all sorts of emotional.

RELATED:  Go Behind The Scenes of American Idol Season 14!

Not every contestant is so lucky though. During an interview with special ET correspondent Lance Bass, the “Booty” singer joked that she’s developed a secret way to communicate during auditions with fellow judges Keith Urban and Harry Connick Jr.

“I just pinch them, I like to pinch!”

Season 14 of American Idol premieres Wednesday, Jan. 7 on Fox.

 Watch Demi Lovato Gush Over Wilmer Valderrama to Lance Bass! 

While there’s no telling which other hopefuls will steal our hearts like Hope did, Forbes released a list of the most successful Idols from past seasons.

Carrie Underwood, who is expecting her first baby this spring, reigned supreme in 2014, raking in a mega $10 million.

Getty Images

Season 1 winner Kelly Clarkson wasn't far behind. She brought in $8 million last year.

Phillip Phillips earned himself the No. 3 spot on the list, while Taylor Hicks and Scotty McCreery each brought in a cool $3.5 million, tying for fourth.

Rounding out the top 5? Daughtry.

Which former American Idol winner is your absolute favorite?! And, will you be watching the new season? Let @Katie_Krause know on Twitter -- just send her a tweet with the #ETnow hashtag!