SISTERS. (I ?? u @idinamenzel)

A post shared by kristen bell (@kristenanniebell) on

Wait for it...

Kristen Bell just made our hearts melt when she posted a lip sync of herself mouthing along to the smash hit "Let It Go" from her animated film Frozen. But wait, there's more...

In the Instagram vid that The Good Place star shared with her 4.4 million fans, the mother of two, who played Princess Anna in the Disney movie, appears to be at an outdoor event and moves her lips to the famous lyrics, "The wind is howling like this swirling storm inside / Couldn't keep it in / Heaven knows I've tried..."

The bubbly blonde then whips around only to reveal a wonderful surprise—her icy animated sister...IDINA MENZEL

The big-voiced "Let It Go" songstress, who seems to be doing a vocal prep for a performance, can't help but crack up at the reveal.

Kristen Bell, Idina Menzel, Josh Gad, Santino Fontana, Frozen Cast

Alberto E. Rodriguez/Getty Images for Disney

Along with the adorable video, Bell wrote, "SISTERS. (I [heart emoji] u @idinamenzel)."

We heart you both!

It turns out that Idina's rehearsal was for a surprise performance on Tuesday night at The Walt Disney Family Museum Gala honoring John Lasseter, Chief Creative Officer of Pixar and Walt Disney Animation Studios.

These two pals have proved, ever since the film skated into theaters in 2013, that they can't let go of their Frozen friendship.

In case you miss Frozen's most lovable character, Olaf, Walt Disney Animation Studios and Pixar Animation Studios have teamed up for the animated short Olaf's Frozen Adventure, which opens in front the original film Coco on Nov. 22, 2017. 

As if this video, Kristen's recent Elsa Halloween outings, and Olaf's Frozen Adventure weren't enough, an untitled Frozen sequel is scheduled for release in November 2019.

The feature-length film reunites directors Chris BuckPeter Del Vecho and Jennifer Lee with Grammy-winning songwriting duo Kristen Anderson-Lopez and Robert Lopez.

Let our love for Frozen go? Never!

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