To accessorise, Sarah wore little gold hoop earrings and styled her fiery red hair in a wavy curly fashion.
She also wore very heavy pencilled eyeliner and thick eyebrow makeup for added effect.
Royal fans, who are normally divided over Fergie’s style, were really impressed by her new blue coat.
Instagram user @katarzyna.m.wesolowska said: “To be fair I love her playful attitude towards fashion!”