His brother Stephen Baldwin is Hailey's dad.
"I understand where the speculation is coming from, but I'm not married yet!".
Canadian pop superstar Justin Bieber is reportedly solidifying his ties to America by applying for citizenship.
Justin, 24, and Hailey, 21, were pictured last week attending a NY courthouse to apply for a marriage license - with reports claiming the couple actually got married soon after.
Bieber, 24, was born in Canada but since moving to the United States at the age of 13, he has mainly lived in America.
Hailey Baldwin (L) and Justin Bieber attend the John Elliott front row during New York Fashion Week: The Shows in New York City on September 6, 2018.
According to TMZ, the pair were spotted outside a courthouse and it looked like they went in for a marriage license. Confusing us further, she later deleted her tweet.
Emmy 2018: Estos fueron los ganadores de la edición número 70
De esta manera, la producción recupera el trofeo a la mejor serie dramática que ganó dos años consecutivos, en 2015 y 2016. American Crime Story: The Assassination Of Gianni Versace consiguió el Emmy a mejor serie limitada .
James Devaney via Getty Images Bieber and Baldwin pictured together in Brooklyn on September 14.
"Not sure what I did in life to deserve such happiness but I am so utterly grateful to God for giving me such an incredible person to share my life with", she wrote.
Bieber and Hailey dated from 2015 to 2016 before rekindling in June.
Reports indicated that the pair may or may not have been married that day. I was hers previous year.
But Baldwin has since told The Cut that she had hired a wedding planner, picked a designer for a custom wedding gown, and hinted about their upcoming ceremony. "Is 10 too old?"
Hailey Baldwin was equally as enthused in her post about Bieber. "And I don't know what the deal is", he added. I still want to spend time with my wife'.