Rapper Post Malone decided to sweeten up the holidays by giving a single mom $20,000 as a tip. Renee Brown, a Houston bartender, got the money from the star on Christmas Eve.

Post Malone, real name Austin Richard Post, was in the area the day before his halftime performance with Beyoncé at NRG Stadium during the Houston Texans game. He made a stop at the Railyard, a local bar.

Brown shared a picture of the tip on Instagram, writing "This is hands down the most humble personable celebrity I've had the pleasure of meeting. He changed my life." She later revealed to Houston Public Media that working two jobs had made caring for her child that much harder.

"It kind of felt like a fever dream for the first few days," Brown said. "The grind never stops and I have wonderful guests at my bar [...] I love them so much."

Rewatch Beyoncé's halftime show here: