By Deena Zaru

PHILADELPHIA (CNN/CBS) — Bill Clinton made an unannounced stop Sunday at the “Made in America” concert tour in Philadelphia, where he chatted with Beyoncé, who was celebrating her 35th birthday.

The former president and husband of Democratic presidential nominee Hillary Clinton made a stop at the festival’s voter registration tent and was seen laughing and talking with Beyoncé’s husband and hip-hop mogul Jay Z as well.

The campaign group “Hillary for PA” tweeted out some photos of Bill at the event.

Other celebrities like Chance the Rapper and the New York Knicks’ Carmelo Anthony joined Bill Clinton in the VIP section.

Beyoncé and Jay Z, who are prominent supporters of President Barack Obama, have voiced their support for Clinton throughout the 2016 election cycle.

Bill Clinton watched as Chance the Rapper sang happy birthday to an overwhelmed Beyoncé.

Jay Z’s festival, which was headlined by Rihanna and Coldplay, is named after Jay and Kanye West’s collaborative song “Made in America,” which also features vocals by Frank Ocean.

The-CNN-Wire ™ & © 2016 Cable News Network, Inc., a Time Warner Company. All rights reserved. CBS contributed to this report.