Christina Aguilera's baby girl celebrated her first birthday on Sunday!

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The pop star took to her Instagram page that day to post a snapshot of her daughter, Summer, in a little dress as she showed off her sparkling blue eyes. There is a pink balloon next to her that reads, "Happy 1st Birthday! My Sweet, Summer Rain."

 Happy 1st Birthday! My Sweet, Summer Rain.

A photo posted by Christina Aguilera (@xtina) on Aug 16, 2015 at 7:56pm PDT

Aguilera's fiance, Matthew Rutler, posted another photo on Twitter that ought to make everyone's hearts melt. Summer's daddy holds her in his arms and says she "lights up" his life.

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The singer seems to have a strong connection with her feminine side based on her interview with Refinery 29 earlier this year. She recalled a special moment she had with her mother when she grew up, giving the impression if Summer will have that with her mommy.

"One of the strongest memories I have as a child is my mom doing her makeup at her vanity," Aguilera said. "I would always want to spray her fragrance on me- I can still remember the smell. I love the idea of sharing something so personal with my fans, and over the years I have captured different sides of my personality in different scents."