The Calla Mini Dress by RIXO has three-quarter bell sleeves to balance the flippy short skirt and subtle stand collar accented with a keyhole button closure. The Calla Mini Dress by RIXO has three-quarter bell sleeves to balance the flippy short skirt and subtle stand collar accented with a keyhole button closure. The story of RIXO began in 2015 when best friends Henrietta Rix and Orlagh McCloskey bonded over their love of vintage. Today, they design pieces made to be treasured for years to come, defined by handpainted prints, premium materials, and vintage-inspired silhouettes.