Mick Jagger, one of the founding members of The Rolling Stones, made a rare public appearance with his girlfriend, Melanie Hamrick, at a pre-Oscars dinner party. Jagger, 81, began dating the 37-year-old in 2014. Hamrick, a former ballerina, and Jagger first met over a decade ago when the American Ballet Theatre and The Rolling Stones were touring Tokyo.