The sweet treat features an astronaut sitting on Mars. If you look closely, however, you can see that the face in the space helmet belongs to The Martian star Matt Damon -- aka Willow's No. 1 celebrity crush!
"Matt Damon made it after all," the 36-year-old pop star captioned the snap.
Pink hasn't been shy about gushing over her daughter's infatuation with the 45-year-old actor. While speaking with ET last month, the pop star revealed it's actually gotten her "in trouble."
"She's already upset with me because there's a new game we play called Ask Siri -- which, she just found out last week there's a Siri -- and I said, 'Siri, Willow-Matt Damon' and all this stuff came up," Pink explained. "[Willow]'s like, 'How do they know?' She got mad at me!"
"I was like, 'Oh my God, I need to keep my mouth shut,’” she continued. "Sorry!"
Pink had said she was going to get Willow a Damon poster for her birthday, but the outspoken mama clearly did one better!
If it seems like the actor's name hasn't stopped rolling off Pink's tongue, trust her, she knows. "I've never talked about Matt Damon this much in my life!" she joked. "She made me google Matt Damon dolls. That was disturbing. Do that sometime, they're very disturbing."
"It's good. She loves it. I love it. I thought it was great, but I don't love it the way she loves it," Pink said. "She asked me if Matt Damon can come to [her birthday party]. I think she has a crush."
The Pennsylvania native couldn't keep her cool when the 52-year-old actor made a surprise appearance during her interview on Jimmy Kimmel Live! last month. To see the hilarious (and very awkward!) encounter, which occurred on the same day Amber Heard filed for divorce from Depp, watch the video.