Katy Perry had a busy schedule in Atlanta early this week.

On Monday, the entertainer visited patients at Children's Healthcare of Atlanta before renting out an insanely popular Christmas bar. The next night she performed at Phillips Arena, where she chirped about her love of playing in the city.

Miracle, the holiday-themed pop-up bar, posted a Facebook photo Wednesday of the "Wide Awake" singer donning a Santa costume at its Buckhead location. "We had fireworks this week when our new gal pal, Katy Perry, took over Miracle Two in Buckhead! She was sweet enough to snap this pic with our Christmas Elves at the end of the night," the post says.

Perry's crew had a private rental until midnight, according to a spokeswoman. The Buckhead bar, whose original location is in Midtown, is closed to the public on Mondays.

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Earlier that day, Perry visited Seacrest Studios at CHOA from 6 to 8 p.m., posing with patients for photos and signing autographs.

Perry, wearing the Santa outfit, gave her undivided attention to each patient who attended the event and performed three songs: “Roar,” “Firework” and “Rudolph the Red-Nosed Reindeer,” according to a spokeswoman.

“She comforted them when they got emotional and celebrated a birthday with a young fan who just hit her teens,” the spokeswoman said. “She also spent time with the parents and recorded video messages for patients who weren’t able to come down for the visit.”

Ryan Seacrest's nonprofit organization builds media centers in pediatric hospitals to allow patients and their families to experience radio and television broadcasting.

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In other news:

Here’s a list of organizations offering volunteer opportunities for individuals and families Furkids Animal Rescue & Shelters Lift Up Atlanta Christmas Toy Drive Hosea’s Feed the Homeless Christmas Dinner Hosea’s Children’s Christmas Party Adopt-a-Family for the holidays Hands On Atlanta