Kylie Jenner is reminiscing about her time as Gwen Stefani’s backup singer.

Yep, you read that right! In a Thursday Instagram Stories post, the makeup mogul shared a clip from a 2005 moment where she and the Hollaback Girl singer shared the stage! In the cute vid, Gwen, 53, can be seen in full performance mode, singing the lyrics:

“A few times I’ve been around that track so it’s not just gonna happen like that”

She then raised the microphone to an 8-year-old Kylie, who sat on the shoulders of a backup dancer, and belted out the rest of the lyrics:

“I ain’t no Hollaback Girl, I ain’t no Hollaback Girl.”

So cute!

Related: Kylie’s New Pics Prove Son Aire Looks JUST Like Stormi!

The 25-year-old wrote across the throwback:

“i will neverrrrrr get over this @gwenstefani”

Then, in response, Gwen re-posted the clip to her Story as well, and wrote:

“ur so cute @kyliejenner”

Awww! We love this interaction! Talk about when two worlds collide, right?? See the full moment (below):

Did YOU know Kylie sang on stage with Gwen?? Let us know in the comments down below!

[Images via Kylie Jenner & Gwen Stefani/Instagram & NBC/YouTube]

The post Gwen Stefani Responds To Kylie Jenner’s ADORABLE Throwback Vid Of Them Singing Together! WATCH! appeared first on Perez Hilton.