Yeah, she's been in the news a LOT recently.
But if her surname sounds familiar to you for another reason, that's probably because she's part of one big, talented family.
Let's break down the key members.
Hailey's uncle: Alec Baldwin
Of course, Hailey's uncle Alec, 60, is arguably the most famous Baldwin (perhaps not for long).
Thanks to his impression of Donald Trump on Saturday Night Live and his role in hit sit-com 30 Rock, he's a household name from way back.
Alec has four kids, daughter Ireland from his marriage to actress Kim Basinger, plus sons Rafael and Leonardo and daughter Carmen from his marriage to yoga instructor Hilaria Baldwin.
Alec has three younger brothers, Daniel, 57, William a.k.a. Billy, 55, and Stephen, 52.
Which brings us to...
Hailey's dad: Stephen Baldwin
A heartthrob in his heyday, Stephen Baldwin starred in a series of B-grade movies before moving on to reality television in later life.
He appeared in two seasons of Donald Trump's Celebrity Apprentice and famously quit I'm A Celebrity ... Get Me Out Of Here after insects laid eggs under his skin.
He's also publicly endorsed Trump for US President and, bizarrely, has a Hannah Montana tattoo on his shoulder because Miley Cyrus dared him to get one.
Yeah, we don't even know.
Hails has spoken about her father's controversial views before, telling The Sunday Times: "That [the US presidential election] was a very hurtful situation for me. I love my father, he's an amazing dad, but we so strongly disagreed on [the election]. He and my [sister Alaia] strongly disagreed on it. We don't talk about it now. It's not worth the argument."
Hailey's mother: Kennya Baldwin
Her mother Kennya Baldwin has been married to Stephen since 1990.
A Brazilian-born graphic designer, Kennya prefers to fly under the radar and skips most of Stephen and Hailey's red carpet events.
In fact, she can pretty much be summed up by this video of Hailey rapping Drake lyrics at her while she stands there confused and unimpressed.
Hailey's sister: Alaia Baldwin
Few people know that Hailey is not the only model in her immediate family — her older sister Alaia, 25, also does modelling work.
Hailey was Alaia's maid of honour when she tied the knot with husband Andrew Aronow in September 2017.
Hailey's cousin: Ireland Baldwin
Before Hailey Baldwin was the supermodel she is today, she was better known in the fashion industry as "Ireland Baldwin's cousin".
Ireland, 22, cracked into the modelling scene a few months before Hailey, thanks to her alabaster skin and statuesque figure (she's 188 centimetres tall!).
The cousins are super close though, and a few strategically placed shout-outs on Ireland's Instagram certainly boosted Hailey's social media profile.
Can we join this gene pool?