Kristen and Dylan have sparked engagement rumours (Picture: Instagram)

Kristen Stewart’s girlfriend posted an adorable birthday tribute to the actress, and it has fans thinking that the couple are engaged.

Kristen has been dating screenwriter Dylan Meyer since August 2019, and while the Charlie’s Angels star isn’t on Instagram, Dylan often shares sweet pictures on her own account.

To mark Kristen’s 31st birthday, Dylan posted a picture of the actress sitting with her dog, and wrote: ‘Life sure is sweeter with this cute little family. Happy birthday, kiddo. You knock my socks off.’

While that caption would be enough to squeal over, fans were equally as excited about a sparkler that sat on Kristen’s ring finger.

One person simply left a row of ring emojis underneath the snap, while another wrote: ‘Holy ring finger!’

If the pair are engaged, it wouldn’t be too much of a shock, as Kristen has been ready to pop the question for two years.

https://www.instagram.com/p/CNd5QKhnQrx/

Speaking just three months into their relationship, the Twilight star said that she couldn’t ‘f***ing wait’ to propose to her girlfriend.

She told Howard Stern: ‘I wanna be like somewhat reasonable about it, but good things happen fast.