Khloe Kardashian posted a new photo of her daughter and "best friend" True Thompson on Monday.

The 34-year-old "Keeping Up with the Kardashians" star shared the adorable picture of True, her 4-month-old daughter with boyfriend Tristan Thompson, on Instagram.

The snapshot shows True smiling and wearing a gold romper and tiara. The post had received over 4.6 million likes as of Tuesday morning.

"You don't know this yet but you're my best friend for all eternity!" Kardashian wrote in the caption.

Kardashian gave birth to True in April following reports Thompson cheated during her pregnancy.

The couple were spotted kissing Sunday during a vacation in Mexico with Kardashian's sister, Kendall Jenner, and her beau, Ben Simmons.

"[They] looked to be very much in love and letting loose," a source told Us Weekly.

E! News confirmed Kardashian and Thompson have been "very affectionate" during the trip.

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"Khloe and Tristan also seem to be doing very well," an insider said.

"There doesn't seem to be tension or any kind of hard feelings. Khloe seems very into him and he reciprocates."

The "Keeping Up with the Kardashians" star shared cute photos in July of a sleepy True.

She told fans on Twitter the same month it's "honestly so great being a mommy."