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Kendall Jenner, Vogue

Mario Testino/ Vogue

Kendall Jenner just took her modeling resume to a whole new level.

The 20-year-old landed her first cover for the April issue of American Vogue, which was released on Wednesday, marking another big step in her supermodel career.

Photographed by Mario Testino, Kendall poses in a pair of black bikini bottoms with an off-the-shoulder red and black polka dot crop top, giving the camera her go-to sultry smirk as she shows off her flat tummy and toned legs.

Within the interview for the spread, the reality star dishes her secrets to staying one of the most followed celebrities on social media.

"So," she began, "It has to be organic. It means you really can't plan it out."

In fact, that's exactly what happened with the picture she posted that turned into the most liked photo on Instagram in 2015. She was on a yacht anchored off Monaco with Kylie Jenner, Gigi Hadid, Bella Hadid and Hailey Baldwin when they decided to mess around and arrange her hair in a bunch of hearts.

Kendall Jenner, Instagram, Heart Hair

Instagram

"I was having a bad day. I wasn't in the flow. I was like, 'Everyone sucks.' That's when I did my best image," she revealed, despite debating whether to even post it at all. "I was lying in bed and messing with it. And I thought, 'Is this good?' And I just posted it, and I remember looking at it right away and having a lot of likes and saying, 'Huh.'"

As for her second bit of advice, Kendall says to leave a little bit of "mystery" for your followers. "You don't want to do too many posts," she said. "You want to leave them wanting to come back."

Kendall Jenner, Vogue

Mario Testino/ Vogue

Kendall also says it's important to separate from your phone for a little while. She and her posse of model friends will often put their phones in a pile at the end of the table to refrain from using them while out to dinner.

The model realizes Instagram and Twitter aren't the meat of enjoying life. "I mean, it's so crazy to me," she said. "'Cause it's so not real life—to stress out about a social-media thing."

Check out her full interview with Vogue here.