Kate Mara carries her baby girl in her arms during a walk in LA

She has been isolating with her husband Jamie Bell and their baby daughter.

And Kate Mara got some fresh air with her little one as they stepped out for their daily exercise in Los Angeles on Wednesday afternoon.

The actress, 37, enjoyed a stroll with her baby girl – whose name she is yet to reveal – while pushing a red toy car along during the walk. 

Kate ensured she was protected while out and about as she covered her face with a floral mask amid the ongoing coronavirus pandemic. 

Kate, who was carrying her baby in her arms, opted for a casual look as she rocked a simple white T-shirt with a pair of slouchy black sweatpants.

The Fantastic Four star went make-up free and wore her brunette locks swept back into a loose bun, while shielding her eyes with a pair of stylish shades. 

Kate and her husband Jamie welcomed their daughter last year, but have yet to reveal her name. 

The couple announced the arrival of her little girl at the end of May 2019 on social media.

Alongside a sweet photo she penned: ‘We had a baby a couple weeks ago… Here are her feet.’

The couple first met as co-stars in Fantastic Four and began dating in 2015, before getting engaged in January 2017. 

Kate and Jamie married in July 2017 and now split their time between Los Angeles and New York.

While the couple’s daughter is the first child for Kate, she is Jamie’s second child. 

The former child star shares a son, who is six, with actress ex-wife Evan Rachel Wood, 32. The couple were married from 2012 to 2014.