Instagram this week to leave a touching tribute to his mother Penny Lancaster, 51, as Christmas comes this weekend. Penny shares Ali and Aiden, 11, with Rod Stewart, with the couple marrying in 2007.Ali took to Instagram to share a heartwarming and tearful tribute to his mother with a set of two pictures.One showed Ali holding his mother's hand to his chest as she rested her arm around him in a restaurant as they posed for a picture.The second showed Ali being held up to watch a sports game by his youthful mother.Ali simply captioned the post with a black heart, with the heartfelt post paying tribute to her loving mother.A post shared by Ali stewart (@alastairwstewart)She tearfully replied: "Love you too."Penny took to Instagram to share a smiley snap with her son last month as they enjoyed lunch together.The police officer captioned the sweet Instagram post: "So proud of my boy, happy 17th Alistair."Penny was wearing a pale denim jacket and wore her blonde hair tied back in a ponytail, while a fringe framed her features.Meanwhile, Alistair wore a black polo neck top and a diamond necklace which featured the word angels.This all comes as Rod shared that his youngest son was rushed to hospital after "going blue" during a football game.He and Penny feared that their son may have been having a heart attack, leading them to call 999.Aiden was taken away in an ambulance after collapsing whilst playing for his Young Hoops Under 12s team.Rod said: "We thought my boy had a heart attack.
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