Maddie, daughter of Spears' little sister, Jamie Lynn Spears, had a Frozen-themed birthday party Friday, but unfortunately Aunt Britney wasn't able to attend.
So instead, she did the next best thing and showered her niece with some birthday love on Instagram with some videos of the younger girl singing.
"Wishing a very Happy 6th Birthday to Princess Maddie!! Wish I was there to sing Happy Birthday to u," Spears captioned the video, which features Maddie and Jamie Lynn singing.
The second video also features the little girl belting it out.
"Sing it Maddie!! Loving all the bday videos@jamielynnspears has been sending me today :) So cute!" Britney Spears wrote.
Jamie Lynn Spears posted a photo from Maddie's birthday party to share with her sister and fans.
"Our little family...I love them both soooooo much!!!! Just missing Nice!!! @jamiewatson985 #thewatsons," Jamie Lynn Spears wrote.