"Last night the love of my life got down on one knee and I said… YES!" Edwards captioned a series of magnificent sunset images taken at the momentous occasion.
Her girls from Little Mix sent Perrie all their love in the post's comments.
"Best news! So happy for you both 😍😍❤️❤️," wrote Leigh-Anne Pinnock as Jade Thirlwall added a crying and heart emoji.
Edwards and Oxlade-Chamberlain welcomed their son Axel in August 2021. Now, less than a year later, they are engaged.
The musician shared a black-and-white image of her child's hand, ear, and foot on Instagram at the time to announce the birth of her child. At the time, she wrote, "Welcome to the world, baby 21/08/21."
After her son was born, Edwards commemorated the event with an Instagram post for the new year in which she reflected on 2021. She shared several pregnancy-related memories there, including obtaining a scan, discovering the gender of her unborn child, and unwinding after giving birth.
Edwards captioned her photo, "I cooked a whole human in 2021."
According to Capital FM, Edwards and Oxlade-Chamberlain started dating in 2016 but only made their relationship known a year later. Zayn Malik, a former member of One Direction, and Edwards were previously engaged.