The Formula 1 heiress was spotted leaving Zuma restaurant in the capital with her sister Petra, her father Bernie and her new husband Jay Rutland yesterday evening (28 October) and expertly concealed her baby bump in a fashionable LBD.
Her dress featured subtle red horizontal stripes across it and came just above the knee, showing off her legs.
She teamed the frock with a pair of classic black Louboutin heels and a cute red clutch and styled her long brown hair in pretty ringlets.
The 29-year-old's hubby Jay also looked super smart for the family meal and donned a black three-piece suit, which he wore with a red tie to complement the detail on his wife's dress.
Tamara announced that she is pregnant with her and Jay's first child in September, just over three months after the couple got married in a lavish ceremony in the French Rivera.
But the future mum's whirlwind lifestyle doesn't appear to have slowed down too much since she fell pregnant, as she attended a beauty launch in New York last month with The Hills' Whitney Port.
Tamara was seen also wearing black at the NYC launch, which has us wondering whether that might be her go-to colour for the duration of her pregnancy.
What do you think of Tamara's outfit? Let us know below, as the best comment each week wins £50!