The 'Wings' singer marked her 20th birthday today (10 July) with a surprise cake in the recording studio as Little Mix work on new material. Nicola has previously worked on music with the band.
Little Mix's Jesy Nelson, Leigh-Anne Pinnock and Jade Thirlwall posted this picture of Perrie and her cake to Twitter, adding the caption: "Perrie's studio birthday surprise… can't wait for the other surprise later."
It appears to have been Perrie's second cake of the day, as earlier she tweeted a photo of a colourful creation designed in the shape of the iconic peace symbol.
She wrote: "20 AT LAST! Thank you for all the birthday messages! :) Dya like my cake? #PeaceLoveMusic."
Little Mix weren't the only ones sending birthday wishes to Perrie, who is dating One Direction's Zayn Malik. Plenty of the band's fans, known as Mixers, chipped together to send well-wishes.
Perrie made sure to send her thanks, saying: "Me & my mam are sat here crying watching the birthday videos. Thanks so much, they're beautiful! I'm the luckiest girl in the world!"
The loyal fans even had Perrie's birthday trending on Twitter!
Aside from indulging in cake, it seems Perrie and Jade took time away from their work to enjoy a game of swingball in the garden of the recording studio.
And Perrie later posted a Vine video proving that she is the "champion" of the sport. We're not sure we can verify that from just a few seconds of footage but we'll take her word for it!
Happy birthday Perrie!
Watch Little Mix's video for 'How Ya Doin'?' in honour of Perrie's birthday: