Pregnant Julia Stiles shows off baby bump in rare photo

She's kept the details of her pregnancy under wraps.

But Julia Stiles broke with tradition to share a rare pregnancy selfie of herself, posting a mirror selfie of her blossoming bump, the Daily Mail reports.

The star, who is expecting her first child with fiance Preston J.Cook, captioned the picture, "Alright, I couldn't resist". 

Clad in a figure hugging colour block dress by Tiffany Rose, Julia poses in her bedroom, holding her phone up to take a cheeky snap.

The star's fans were quick to comment on how "beautiful" she looked, enthusing, "absolutely adorable".

Others were a little slow on the uptake, enthusing, "Congratulations" after learning of her pregnancy for the first time.

This article was first published on Daily Mail and is republished here with permission.