Penny Lancaster and Sir Rod Stewart's household on 16 February.The couple's youngest son, Aiden, marked his 10th birthday, and Loose Women star Penny treated her Instagram followers to a peek inside the family's celebrations.MORE: Loose Women stars' best wedding photos revealed: See their stunning dresses WATCH: Penny Lancaster's son Aiden shows off his favourite Christmas presentJust like his dad, Aiden is a passionate supporter of Celtic FC, and Penny decided to bake a cake in honour of the