Kourtney Kardashian shines the top bra with clear leopard print after twinkling on Diana Ross's birthday

Kourtney Kardashian donned her figure in a monochromatic transparent blouse when she was seen in Calabasas on Thursday.

This 39-year-old leopard-print turtleneck shirt was a clear glimpse of her black bra, matching her shiny shoes.

Bringing her black hair back into a bun, the reality TV star accentuated her features with makeup and slipped into a fossil gray jean.

On the Road: Kourtney Kardashian donned her figure in a monochromatic transparent blouse when she was seen in Calabasas this Thursday

Earlier that day, she used her Instagram page to show off the sparkling costume she was wearing at Diana Ross's 75th birthday party on Tuesday.

Kourtney attended the glamorous party with her sister Khloe Kardashian, 34, and their mother and director, Kris Jenner.

Held at the Warwick in Los Angeles, the party was crowded with big names such as Beyonce, who sang Happy Birthday To You to Diana.

Elegant and chic: this 39-year-old woman's leopard-print half-turtleneck top has clearly seen her black bra matched to her shiny shoes

What a look: bringing her black hair back into a bun, the reality TV star accentuated her features with makeup and donned a gray fossil jean

Diana heard a tribute speech from her black star daughter, Tracee Ellis Ross, and the son of the birthday girl, Evan Ross, swayed on the arm of his wife Ashlee Simpson.

Sean & # 39; Diddy & # 39; Combs was present, as well as Berry Gordy, founder of Motown Records, with whom Diana became a star in the 1960s as part of The Supremes.

The Kardashian-Jenners have rallied around Khloe in recent weeks following his separation from Tristan Thompson, a Cleveland Cavalier bomb.

When you figured it out: earlier in the day, she used her Instagram page to show off the sparkling costume she wore at Diana Ross's 75th birthday party on Tuesday.

Family Time: Kourtney attended the glamorous party with her sister Khloe Kardashian, 34, and their mother and director, Kris Jenner.

Khloe and Tristan share an 11-month-old girl called True, and they started dating while her ex-girlfriend, Jordan Craig, was still pregnant with her firstborn.

Less than 48 hours before True was born last April, DailyMail.com revealed the story of Tristan's alleged infidelity with New York strip club bartender barman Lani Blair.

Khloe and Tristan split up after a meeting last month at a party, he shared a kiss with Jordyn Woods, Khloe's half-sister's best friend, Kylie Jenner, Elder 21 years old.

Kourtney's notice: Held at Warwick in Los Angeles, the party was filled with big names such as Beyonce, who sang Happy Birthday To You to Diana