Sienna Miller, 41, and boyfriend Oli Green, 25, hold hands while departing Prince's Trust Gala

Kate Moss, Sienna Miller and Rita Ora dazzle at The Prince's Trust Global Gala in New York City

Sienna Miller, 41, puts on a loved-up display with boyfriend Oli Green, 25, at New York Knicks game

Sienna Miller cuts a chic figure in blazer and jeans for springtime stroll