Vogue Williams and Spencer Matthews look the picture of happiness with their son Theodore and their newborn baby girl, Gigi Margaux.The couple introduced their one-week-old daughter in HELLO! this week, following her birth on Wednesday 22 July at London's Chelsea and Westminster Hospital, on what proved to be a "lovely day out," laughs Vogue. WATCH: Vogue and Spencer reveal plans for more babiesSpeaking about her positive birth experience, the Irish DJ and model said: "My contractions weren't