Fifth Harmony's Camila Cabello celebrated her 18th birthday with some celebrity pals, including Taylor Swift who threw her a party.

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

Cabello has a pretty rad friend in Swift since the Blank Space singer put together an adorable little party for the newly 18-year-old 5H member.

On Wednesday, Cabello shared a collage of photos on Instagram from her mega-cool birthday party with the likes of Selena Gomez, the ladies of Haim, Paramore's Hayley Williams and others in attendance all thanks to Swift.

Camila Cabello Receives Touching Birthday Wishes From Bandmates On Instagram

"I LOVE 18," Cabello shared after thanking Swift and the others for being such "genuine, incredible people" who gave her "so much love."

Cabello also personally thanked Swift on Instagram while sharing an adorable photo of them together rocking some sweet headgear, which is above.

"[I] wish [I] could shout from the rooftops how fun last night was for me and how much love [I] felt. [I] am so grateful to call someone like you my friend. [T]hank you for bringing everyone together and making last night so special!!!!!!!!" Cabello gushed.

Actress Hailee Steinfeld was also at Cabello's princess-y themed party and shared a couple of photos on Instagram.

Her friendship with Cabello is adorable as she called the 5H member "MY BABY LOVE MUFFIN CAKE PUMPKIN BUTTERNUT SQUASH MONKEY BANANA LOVER," in a photo's caption.

A photo posted by @haileesteinfeld on Mar 4, 2015 at 1:37pm PST

Steinfeld loves spending time with some of her favorite gal pals.

A photo posted by @haileesteinfeld on Mar 4, 2015 at 3:17pm PST

Alexander DeLeon also attended Cabello's party and shared a cute picture of himself with the birthday girl, Gomez and Swift.

Gomez affectionately called Cabello "my nugget" in the caption of a photo she shared from the party.

 @camila_cabello happy birthday my nugget. #girlsnighttothefullest

A photo posted by Selena Gomez (@selenagomez) on Mar 4, 2015 at 12:36am PST

Swift shared a photo of a bunch of the party-goers with two birthday cakes, which she apparently baked herself according to a report from Hollywood Life on Wednesday.

"Taylor organized the whole party - she invited everyone and she even baked Camila a cake. It was completely PG. She didn't even put out alcohol because Camila can't drink yet. They had a piñata with candy and everyone got cute little goody bags to take home. It was really sweet and not like a typical Hollywood party at all. There was no drama and no one was out of control. It was just very, very tame," a source told the site.

Tags: fifth harmony Taylor Swift camila cabello