Cardi B and Stefon Diggs might just be back on after their recent reunion at the rapper's Little Miss Drama Tour. Source: Elsa / Getty On Wednesday, April 8, Diggs attended his ex's tour stop in Washington, DC. Fans found out about the NFL star's attendance via personal trainer Clyde Simmons, who posted a video on his Instagram Stories showing Diggs, his youngest brother, Trevon Diggs, and their mom, Stephanie Diggs, having fun at Cardi's show at the Capital One Arena.