Hailey Baldwin's cousin had the perfect reaction to her engagement to Justin Bieber

Ireland Baldwin is clearly a fan of the Biebs...

Hailey Baldwin's whole family seems very happy about her recent engagement to Justin Bieber, but her cousin Ireland Baldwin's response might be the best one yet.

As the daughter of Alec Baldwin and Kim Basinger, Hailey and Irelend did what most first cousins did when they were little and that is, have baths together. So, when news of her kin's engagement broke across the interwebs this week Ireland, who is also a model in NYC, decided to celebrate by sharing a throwback photo of the cuzzies taking a bath in their cozzies and wrote the cutest, Bieber-centric caption.

"There's gunna be one less lonely girl … and only one lonely girl left," Ireland wrote under the Monday, July 9 Instagram pic, referencing Justin's 2009 banger. "My other chicken is soon to be a beautiful bride. Congratulations to the two of you @haileybaldwin @justinbieber." Just so everyone was clear what she was talking about the 22-year-old added a heart and engagement ring emojis.

On Monday, via an intense and lengthy social media post, Justin, 24, confirmed he'd popped the question to Hailey, 21, while in the Bahamas at the weekend.

"Was gonna wait a while to say anything but word travels fast, listen plain and simple Hailey I am soooo in love with everything about you! So committed to spending my life getting to know every single part of you loving you patiently and kindLY," he wrote under a photo of himself and his bride-to-be wearing her engagement ring. "I promise to lead our family with honor and integrity letting Jesus through his Holy Spirit guide us in everything we do and every decision we make. My heart is COMPLETELY and FULLY YOURS and I will ALWAYS put you first! You are the love of my life Hailey Baldwin and I wouldn't want to spend it with anybody else."

Hailey also gave a social media nod to her upcoming nuptials when she tweeted: "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! No words could ever express my gratitude."

We wonder if Ireland will get a start as bridesmaid at the wedding of the year? Only time will tell...