Ellen DeGeneres is calling Gwen Stefani out for falling through on a wedding promise. 

On Wednesday, the "Hollaback Girl" icon appeared on The Ellen DeGeneres Show to discuss her new makeup brand, GXVE, as well as her and Blake Shelton's life as newlyweds. During the interview, DeGeneres pressed Stefani about a previous request for the talk show host to join her bridal party — which didn't end up happening.