The model, 33, beamed with pride as she played with her boy in a black and white snap on Instagram.
Rosie wore a long white dress, with her hair falling down in kinks.
She smiled at her little boy, who she shares with Fast & Furious actor Jason Statham.
In the next shot, both mum and son face away from the camera as she holds him.
The pics come from her shoot with Allure Magazine, which included a shot of her in a cut-out frock.
But she also gave fans another intimate look into her life with a bathroom selfie.
The model is sitting on the bath wrapped in just a towel, as she stares into the camera.
Rosie lives in LA with her Hollywood star fiancé Jason Statham, 52, and two-year-old Jack.
The star opened up last month about how she’s coping with the tough time.
Writing in her new Distancing Diary on her Rosie Inc. blog, she explained: “I spend my time trying to figure out how to entertain a 2-year-old indoors, which is a real challenge, I must say.
“I’m also cooking a lot more, which may or may not be a good thing for those who have to eat it!”
She continued: “I’m cooking recipes from Jamie Oliver’s Five Ingredients cookbook because a) they use less ingredients, so less trips to the supermarket and b) they are quick and easy.
“I have been making lots of comfort foods like roast chicken and potatoes or pasta. I’m sure I’ll come out of isolation a few pounds heavier!”
