The girls of Fifth Harmony have such an adorable friendship, which really shined through Tuesday as they celebrated Camila Cabello turning 18!

Fifth Harmony's Camila Cabello Turns 18 & Receives Birthday Love On Social Media

It almost appeared as though Lauren Jauregui, Ally Brooke Hernandez, Normani Kordei Hamilton and Dinah Jane Hansen forgot about their bandmate's birthday Tuesday since they all waited until toward the end of the night to share their thoughtful birthday wishes with Cabello on Instagram.

Jauregui kicked off the birthday messages amongst herself and the other 5H members to Cabello.

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"Super cute candids taken by a random stranger always make good birthday post pics," she gushed.

The photo she selected of her and Cabello is of them laughing.

"You are such a beautiful person inside and out and I'm so thankful that I get to call you my friend. Thanks for all the laughs, for being my shoulder to cry on whenever I've needed a friend, for giving amazing sound advice (even though you're just now considered an adult by the government you've been there mentally for a while which I greatly appreciate)," Jauregui said to Cabello.

"I wish you many more years of amazingness and I hope you had the best day with your family. You deserve all the love and happiness the world has to offer and I wish it all upon you for many many years to come," she added.

The oldest 5H member, Hernandez, then shared a cute photo of herself with Cabello on stage and gushed over Cabello finally being 18.

"I just want to say that it's been so awesome seeing you grow over the past few years. You've grown into a beautiful, confident, brave young woman and I am so grateful for the laughs we have been able to share together," Hernandez stated.

"I WUV you so so much and hope this bday is wonderful. 18 is a pretty great age so ENJOY IT!!" she beamed.

Hamilton reflected on boot camp with Cabello in her birthday message.

"I remember being at boot camp the girls and I having to teach you how to walk in heels and you totally just eating the floor," she shared.

"[B]ut you've completely transformed before my eyes into such a beautiful , strong , intelligent women not completely graceful but definitely inspiring to not only to me and the girls but to many of other people in this world . you have such a powerful impact and voice," she added.

Hansen completed the birthday messages while telling Cabello, "Somewhere in the world it's still March 3! And I know I'm a little late bt I promise WALZ I didn't forget how SPECIAL this day is!"

Hansen also got pretty reflective in her message to Cabello, mentioning their many chats about boys and their abundant amount of jokes that they tell each other, among other stuff.

A photo posted by ♛DinahJane (@dinahjane97) on Mar 4, 2015 at 12:52am PST

Hansen even called Cabello her "lifetime sister," and jokingly said "ewww" over Cabello being an adult now.

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