The Bibi Lou Bertha Mules exude elegance, adorned with a dazzling square buckle on the satin vamp. The Bibi Lou Bertha Mules exude elegance, adorned with a dazzling square buckle on the satin vamp. Bibi Lou, founded and located in Spain, crafts shoe and boot collections that celebrate quality, versatility, and importantly, the creative spirit. From of-the-moment styles to classic silhouettes, there's an irresistible finishing touch for every outfit.