Kendall Jenner says she felt "really bad" about her Pepsi ad controversy.

The 21-year-old model and television personality cried on Sunday's episode of "Keeping Up with the Kardashians" while addressing backlash toward her commercial for the soda company.

"I just feel really, really bad," she told sister Kim Kardashian. "I feel really bad that anyone was ever offended. I feel really bad that this was taken such a wrong way and I genuinely feel like [expletive]. I have no idea how I'm gonna bounce back from it."

Jenner shed tears in a confessional shot while explaining she only had good intentions by appearing in the ad.

"I would never purposely hurt someone ever," the star said. "I would, obviously, if I knew this was gonna be the outcome I would never have done something like this. But you don't know when you're in the moment."

"I just felt so [expletive] stupid," she confessed. "The fact that I would offend other people or hurt other people was definitely not the intent and that's what got me the most, is that I would ever make anyone else upset."

Jenner came under heavy fire in April after starring in a protest-themed commercial for Pepsi's "Live for Now" campaign.

Pepsi pulled the ad after many said the commercial appropriated and made light of the Black Lives Matter movement.

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"Pepsi was trying to project a global message of unity, peace and understanding," the company said in a statement. "Clearly we missed the mark, and we apologize."

"Keeping Up with the Kardashians" airs Sundays on E!.