Many fans left comments praising the Australian model and YouTuber's beauty, calling the pictures "absolutely incredible".
Cartia and Chilwell, who plays for Chelsea football club, went public with their relationship on Valentine's Day.
Last month, Cartia shared a photo of the couple cuddling in front of a fireplace, and Chilwell posted a snap of him kissing her cheek last week.
Cartia is a successful model and works for modelling agency Storm, which has led to work with top brands such as Rimmel, Louis Vuitton, Prada and Dior.
She also hosts the Common Chaos podcast with friend Ashton Wood and has nearly 500,000 subscribers on her YouTube channel.