Khloe Kardashian, 39, flashes her toned tummy in black leather outfit… after celebrating Tatum’s first birthday with ex Tristan Thompson

Khloe Kardashian was back to modeling for her brand Good American this week.

Busy Koko: Khloe Kardashian was back to modeling for her brand Good American this week. The beauty was seen in an all black outfit as she posed away in a garage while sitting on a black FerrariThe beauty was seen in an all black outfit as she posed away in a garage while sitting on a black Ferrari.

In some of the images the 39-year-old flashed her toned tummy as she made the most of a shirt and black shiny jeans.

But the focus of the shoot was her boots which were over the knee and oversized.  ‘American boots dropping 8/10,’ the reality TV star wrote in her Instagram caption.

In 2016 Kardashian and business woman Emma Grede launched their clothing line Good American. The company is now worth $12 million.

They made $1 million in sales on the first day.

Good American started by selling jeans ranging from size 00 to 24 and has expanded to a variety of clothes including workout clothes, dresses and a maternity collection.

Power pose: In some of the images the 39-year-old flashed her toned tummy as she made the most of a shirt and black shiny jeans. But the focus of the shoot was her boots which were over the knee and oversizedThese days she seems to be focusing on the shoe line.

The company is reportedly now worth $12 million.

This comes after she threw a big birthday party for her son Tatum who turned one.  The designer was seen with both her son Tatum, one, and daughter True, five, as they sat on the grass of her backyard while playing with toys.

The star was beaming with joy as she smiled alongside her kids during Tatum’s first birthday bash.

Also there was her former partner Tristan Thompson.

Black magic: 'American boots dropping 8/10,' the reality TV star wrote in her Instagram caption. In 2016 Kardashian and business woman Emma Grede launched their clothing line Good American. The company is now worth $12 millionKhloe looked youthful in her plunging white summer dress that had straps over her shoulders, a small waistline and a full skirt as she added high heels.

Her glam was on target as she wore her blonde hair down and had on rose-toned makeup as she added black sunglasses and a diamond necklace.

Her cherry red long nails was the only color to her look.

Little True was darling in a white dress as she smiled from ear to ear as she wore her hair in curls with a braid up the center.

And Tatum was distracted as he looked off in the distance while mom out a hand on his waist. He wore a white T-shirt, biege slacks and white socks.

Tristan did pop up in another photo – when he was with Khloe as well as her pregnant sister Kourtney – who was in all black – and her new husband, drummer Travis Barker of Blink 182.

Tristan wore a white shirt with white shorts and sneakers and a silver chain.

Kourtney appeared to have no makeup on as he bra peeked from under her tank top.