Caitlyn Jenner and Kris Humphries attend the same event

They have quite a contentious history, but still showed up to the same event.

On Sunday, Caitlyn Jenner and Kris Humphries both attended the 2017 So The World May Hear Awards Gala for the Starkey Hearing Foundation in St. Paul, Minnesota.

The reality star and 's ex-husband arrived for the ceremony two years after the athlete posted a transphobic tweet reacting to the TV personality's Diane Sawyer interview.

Awkward?: Caitlyn Jenner and Kris Humphries both attend the 2017 So The World May Hear gala for the Starkey Foundation, two years after the basketball player's infamous transphobic tweet

Awkward?: Caitlyn Jenner and Kris Humphries both attend the 2017 So The World May Hear gala for the Starkey Foundation, two years after the basketball player's infamous transphobic tweet

Awkward?: Caitlyn Jenner and Kris Humphries both attend the 2017 So The World May Hear Gala for the Starkey Foundation, two years after the basketball player's infamous transphobic tweet

Beauty in black: The 67-year-old walked the red carpet in a long-sleeved, black dress with a thigh-high slit

in black: The 67-year-old walked the red carpet in a long-sleeved, black dress with a thigh-high slit

The 32-year-old simply sported a grey suit and a black bow tie for the formal occasion.

But the 67-year-old looked fabulous in an elegant, long-sleeved black bodycon dress. 

The garment showed off the brunette's killer cleavage with its low-cut neckline, and flaunted her lean legs thanks to a thigh-high slit.

The MAC Cosmetics collaborator completed the look with matching pumps and a swipe of pink lip color across her plump pout, as she let her long locks down in stunning curls. 

The big announcement: Caitlyn, who was pre-transition at the time, revealed she was transgender in a TV interview with Diane Sawyer

The big announcement: Caitlyn, who was pre-transition at the time, revealed she was transgender in a TV interview with Diane Sawyer

Coming out: 'For all intents and purpose, I'm a woman,' the decathlon champion told the journalist

Coming out: 'For all intents and purpose, I'm a woman,' the decathlon champion told the journalist

Turbulent tweet: Kris responded to the 20/20 special with a transphobic tweet

Turbulent tweet: Kris responded to the 20/20 special with a transphobic tweet

In April of 2015, Caitlyn, who was pre-transition at the time, sat down for a televised interview with Diane Sawyer.

During the 20/20 special, the Olympian came out as transgender.

'For all intents and purposes, I’m a woman,' the New York native revealed during the highly-anticipated broadcast.

The night the interview aired, Kris took to Twitter to post a transphobic message in response, suggesting that Caitlyn's gender identity made him relieved he's no longer part of the famous family.

'Man, I'm glad I got out when I did. #Gottadoyou,' he wrote.  

Taking it back: The NBA player apologized the next day, insisting his true meaning was misinterpreted

Taking it back: The NBA player apologized the next day, insisting his true meaning was misinterpreted

The Atlanta Hawks star received immediate backlash for the

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