After an admittedly up-and-down year managing her daughters' emotions, Kelly Stafford celebrated a hopeful step in the right direction. Kelly, the wife of Los Angeles Rams quarterback Matthew Stafford, revealed that three of her four daughters attended cotillion on Thursday, November 13. Named after a popular 18th century dance, cotillion classes are designed to teach middle school-aged children proper etiquette and manners. Kelly, 36, shared a picture of her three oldest girls in flowy dresses and Matthew, 37, via Instagram captioned: "Cotillion ❤️.