But it sounds like her famous uncle is telling a different story.
However, Alec won't be talking to Justin about any advice he may want to share - as he wants to leave that up to Hailey's dad Stephen.
The news comes after Hailey took to Instagram on Friday to proclaim that she and Justin had not exchanged vows at a New York City courthouse.
The former "30 Rock" star also said he's only met the famous singer one time.
UN chief: 'Time for concrete action' on North Korea
South Korean President Moon Jae-in and North Korean leader Kim Jong Un pose for photographs on the top of Mt. The two couples take a cable vehicle to Mount Paektu in North Korea.
Alec, who won an Emmy last fall for his Saturday Night Live impression of President Donald Trump, said he wasn't going to assume a protective role over Hailey toward Bieber, in their new nuptials.
The pair strolled into the building on September 13 and applied for a marriage license, according to reports. 'But when you get married, you know I mean I think it works best if you can really be together'.
"I understand where the speculation is coming from, but I'm not married yet!" the model wrote in a since-deleted tweet last week.
Bieber popped the question to the model in July, around four months after splitting from previous girlfriend Selena Gomez. Now, it looks like Hailey could be pulling our leg!
Meanwhile, Justin is believed to have applied for American citizenship, while keeping his Canadian citizenship.
Last week, multiple U.S. websites confirmed the news that Justin and Hailey got hitched.