Alec Baldwin snubs niece Hailey by skipping her wedding to Justin Bieber

Hailey Bieber's most famous family member was a no-show at her wedding.

Sources tell People that Alec Baldwin, the brother of Hailey's father, Stephen Baldwin, did not attend her wedding on Monday night, which was her second with husband Justin Bieber.

The outlet reports that Alec and his wife, Hilaria, were at home in New York City when Hailey and Justin wed on Monday evening in South Carolina. An insider told People that the couple spent time at their home in the Hamptons during the weekend leading up to the ceremony, too.

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Perhaps it shouldn't come as a surprise that the A-listers, who announced last month that they're expecting their fifth child together, weren't at the star-studded wedding: In late August, while attending the first night of the 2019 US Open, the former "30 Rock" star told Us Weekly that he had no idea they were having a second wedding.

"I didn't know the wedding was now," he said. "They keep everything under wraps. I'm sure I'll by them something. I can't imagine what they'll need. I'd have to find out what they're missing. There's gotta be something they're missing."

When rumors circulated last September that Hailey and Justin had secretly gotten married in a private ceremony at a New York courthouse, Alec confirmed the news days later at the 2018 Emmy Awards, telling "Access" that "they just went off and got married."

While her aunt and uncle may not have been in attendance, Hailey did exchange vows with Justin in front of 154 guests, including Kylie, Kendall and Kris Jenner, Jaden Smith, Scooter Braun and Corey Gamble. Read more about their wedding here.