Khloé Kardashian's Son Tatum Is Her Brother Rob's Twin in Sweet New Photos: 'How Is He This Big Already?'

The Good American co-founder shares her son and daughter True with ex Tristan Thompson

<p>Khloe Kardashian/Instagram; Gabe Ginsberg/Getty</p> Tatum Thompson (L), Rob Kardashian (R)

Khloe Kardashian/Instagram; Gabe Ginsberg/Getty

Tatum Thompson (L), Rob Kardashian (R)

Khloé Kardashian's son Tatum is taking after his uncle.

On Thursday, the Good American co-founder, 39, shared a series of cute new photos of her 19-month-old son Tatum on her Instagram. Wearing blue jeans, a tan long-sleeve shirt, a green hat and beige Nike sneakers, the toddler looked identical to his uncle Rob Kardashian as he looked up for the photos.

Tatum can later be seen playing outside, zipping around on a pink scooter and drawing with his sister True, 5, at a restaurant.

"How is he this big already?? 🥹," Khloé questioned in her caption.

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Related: Khloé Kardashian Shares Rare Photo of Tristan Thompson with Kids Tatum and True in Celebration of His Birthday

Khloé shares her two kids with ex Tristan Thompson.

Last month, the Kardashians star posted photos of her son's first trip to the firehouse, where he adorably posed in a firefighter suit. He could be seen waving a hand, later changing into a pair of gray shorts.

"Every year I take True and Dream and all of the cousins to our local fire houses," the mom of two wrote on her Snapchat Story. "I'm so grateful for all the hard work, the police department, and the fire department do for all of us and sometimes we bring them ice cream, and around the holidays we always add toys to their toy drive..."

"But I love to take the kids to visit [the firehouse] and they always have a great time seeing the firemen and learning about what they do. This year we took Tatum...," she said.

For Valentine's Day this year, Khloé posted a few photos on her Instagram as she celebrated the holiday of love with her kids. She posed with her two kids in front of a heart-shaped balloon wall, wearing pink and red clothing to match.

The mom of two chose a red top with matching pants and squatted behind son Tatum, who donned a gray T-shirt from Sweet Wink that read "Heartthrob" in red. Next to her brother, True wore a matching set printed with little hearts.

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