The 29-year-old model and heiress, who is 14 weeks pregnant with a "honeymoon baby" with her husband Jay Rutland, disguised her baby bump perfectly in a black peplum ensemble with lace sleeves and top.
Her beautiful brunette curls, a tanned complexion and a pair of sparkling Louboutin shoes finished the mum-to-be's look as she posed at beauty guru John Barrett's salon at the SHOW Beauty launch.
Tamara's New York outing comes after the revelation that she is three-and-a-half months pregnant – just four months after she married Jay in France and only nine months since meeting the love of her life.
"I just feel so lucky," she told HELLO! in an exclusive interview. "I never imagined this all happening so quickly. It's crazy how life works in such mysterious ways. Jay loves children and I'm really excited for the next phase of our relationship."
The delighted father-to-be, 32, told the magazine: “It’s been an amazing year, meeting and marrying my beautiful wife. Now we are expecting our first child and looking forward to the next step in our future together."
Tamara, Formula One chief Bernie Ecclestone's daughter, is hoping for a little girl.
"I want them to be as close as me and my sister. And I would just love to have a little girl who would be super close to Lavinia," she told Mail Online.
"There's only going to be a year between my baby and Lavinia (her sister Petra's six-month-old baby daughter) so that would be amazing. Lavinia is the cutest little pooch in the world. I'm definitely going to find out the sex! I need to know, I need to plan."
She added: "It's nice to have a surprise, but I couldn't cope with not knowing for the next six months!"