Katy Perry has lots of fans—including one very young one, apparently.

An adorable video posted Monday on YouTube has garnered more than 420,000 views so far, and it even earned a response from Perry herself.  

The home video shows a baby crying in her car seat, until Perry’s hit “Dark Horse” comes on in the car. The baby’s mood immediately changes as she is visible thrilled and begins dancing to the catchy hit.

Perry shared the video on Twitter, writing, “Available for babysitting at 10 dollars an hour & 4 Oreos.”

Watch the hilarious must-see clip below.