The Little Mix singer's best friend Katherine Spires immediately took to Twitter to congratulate the pop couple, and posted the snapshots on her page.
"So it's official, Perrie & Zayn are engaged! Couldn't be happier! Love You Both! :') #CongratsPerrieAndZayn," tweeted Perrie's friend, alongside the photo.
The photo-booth style snap shows Perrie and Katherine pulling funny faces and silly poses, with the singer looking especially ecstatic and pointing to her engagement ring in one shot.
Rumours that Perrie and Zayn, both 20, were engaged spread like wildfire when the bride-to-be rocked up to the red carpet of One Direction's film premiere on Tuesday flashing her diamond band.
When put on the spot at the event and asked how he felt about the engagement, Zayn said, "It's cool. It's really cool. We're really happy," according to Mail Online.
The happy news was confirmed by Perrie's mother. "It's official. I'm over the moon," said Debbie Dufty, speaking to the Dorset Echo. "They are really in love."
"It's wonderful because Zayn's absolutely gorgeous and Perrie loves him to pieces. It's just perfect because they get on so well together and they understand each other so it's just fabulous."
According to reports, Zayn, popped the question at the weekend. It is thought that they have not yet set a date for the wedding.
The hot young couple originally started dating in December 2011 after meeting on the set of The X Factor. Although their first attempt at a relationship ended after a few weeks, they started dating officially again in April 2012.
Their romance was rocked in January amid reports that Zayn had been unfaithful with a waitress. But he recently described their relationship "stronger than ever" — and even got a cartoon picture of Perrie tattooed on his arm.