December 23, 2014 11:00 AM

Talk about a holly jolly Christmas!

Kelly Clarkson‘s 6-month-old baby girl got all dressed up in her holiday-themed apparel — a reindeer hat and a onesie that read, “I drink until I pass out” — to celebrate her first photo with St. Nick.

River Rose hangin’ with Santa Claus for the first time! She LOVED him ha!” Clarkson, 32, captioned the snapshot of the two smiling.

Before the big meet up, the new mama was busy spreading her own good cheer.

Courtesy kellyclarkson; Gary Gershoff/WireImage

Despite an early trip to the emergency room, Clarkson hosted her first annual charity holiday concert, Miracle on Broadway, in Nashville on Saturday.

“Y’all, I spent all morning in the ER,” the singer told the crowd. “But don’t worry, they gave me a shot of B12 and I’m feeling great and so excited to be here!”

But she wasn’t the only one who was feeling giddy about all the festivities.

“This is how River and I feel about our first annual Miracle On Broadway show! It was beyond incredible thanks to all of you!” Clarkson wrote alongside a photo of the mother-daughter duo swapping smiles.

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— Alexandra Zaslow

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