Heiress Tamara, who turned 30 last week, had spent the day at the F1 with husband Jay Rutland.
But as soon as she got home she shared the cute ‘kisses’ snap, writing: “Nothing better than coming home to these kisses’.
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Little Sophia looked over the moon to see her mum, too. Tamara then posted a selfie of the pair, captioning it: “Sleepy girls”.
Also at Silverstone with Tamara and Jay were Prince Harry, Jude Law, Michael Fassbender, Naomi Campbell and Amanda Holden.
Last week Tamara shared pictures of her birthday presents, including a portrait from Jay, a phone case and an iPad case both featuring Sophia’s picture and a huge bouquet of pink roses.
But she uploaded a photo of Sophia wearing a white vest with the message: “Happy birthday mummy, I love you”. Tamara wrote alongside the snap: “My most precious gift”
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Speaking recently about having Sophia, Tamara said: “Motherhood is the best thing that’s ever happened to me, and I’m enjoying every minute of it.
“I knew I would love it – I just didn’t know how much. I feel born to be a mother.”