The socialite, who gave birth to baby daughter Sophia on 17 March, looked absolutely stunning as she flaunted her toned tum and lean limbs as she worked out in a local park.
Dressed in a popping pink crop top and black lycra leggings, the 29-year-old socialite was happy to be snapped working up a sweat as she stretched before her training session.
The new yummy mum wasn't far from her daughter, who she was later pictured pushing in a pram through the park.
Just after she welcomed daughter Sophia into the world, Tamara said motherhood is "the best thing that's ever happened" to her - but she was worried during the birth.
She told Hello! Magazine: "When Sophia let out a cry straight away, I was so relieved. My greatest fear was that we wouldn't hear anything.
"I held her first and it was such an amazing feeling. Jay and I had wondered what she would look like and she was absolutely perfect. She was born with loads of dark hair, like us both, and stunning blue eyes."
Meanwhile, just weeks after giving birth, the Formula 1 heiress and hubby Jay Rutland took time out of parenting duties to enjoy a posh meal - and was spotted looking just as stunning.
Tamara showed off her svelte frame in a thigh-split houndstooth skirt, a pair of pointy courts and tight black top for date night with her hubby, Jay Rutland, on Saturday.
The new parents were all smiles as they treated themselves to a swanky slap-up meal at Japanese hotspot Roka in Mayfair.
Tam kept her make-up simple and glowy for the outing, and wore her long tresses in romantic curls. And her man just could not keep his hands off her. We don't blame him with a bod like that.