Pregnant Tamsin Egerton sheathes her blossoming baby bump in a chic navy dress as she enjoys a romantic stroll with boyfriend Josh Hartnett

She's expecting her second child with boyfriend Josh Hartnett. 

And Tamsin Egerton was positively radiating with a healthy pregnant glow as she stepped out in London with her partner and their daughter on Tuesday. 

Clad in a navy printed dress with a peplum hem, the 28-year-old actress was a vision of beauty as she soaked up the sunshine on their stroll. 

injecting more colour into her chic ensemble, she donned a pair of navy boat shoes with vibrant splashes of green and pink, whilst she slung a cobalt cross body over her shoulder. 

Sweeping her golden locks back into a ponytail, she finished off the look with a pair of circular tortoiseshell sunglasses.  

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Leggy lady! Sheathing her blossoming baby bump, the garment skimmed over her pregnancy curves, whilst the short hemline offered a look at her enviably lean legs

Also looking effortlessly stylish on the outing was Josh, who teamed a grey crew neck jumper with jeans and black hi-tops. 

The American actor could also be seen sucking on their daughter's pink dummy as he pushed the pram. 

The genetically-blessed couple are the proud parents of a two-year-old girl, who they welcomed in December 2015 after two years of dating. 

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Suck it up! Also looking effortlessly stylish on the outing was Josh in a grey crew neck jumper . The American actor could also be seen sucking on their daughter's pink dummy

They have kept tight-lipped about their pregnancy, but Tamsin appeared to confirm she was expecting at the Vanity Fair Oscars after-party in February, as she poked fun at her pregnancy diet with fellow guests.

According to People, the St Trinians actress had indulged in a few beignets at the bash - before she joked of the fried pastry snack: 'This is not feeding the baby nourishment!' 

Last year, Josh spoke about how much he loves being a parent, as announced on the Live! With Kelly and Michael show last year that it had put 'everything into perspective'.

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Baby love: They have kept tight-lipped about their pregnancy, but Tamsin appeared to confirm she was expecting at the Vanity Fair Oscars after-party in February

He said: 'I mean, your ego melts away when you have a new kid. Your heart kind of leaves your body and you give it permission to walk around with someone else for a while.

'It’s really terrifying but it’s beautiful. I love it more than anything. I wish I would have started it earlier. But I’m so glad that she is the one I’m raising.'

After admitting that he's been very tired of late, Josh gushed: 'The best moments are when you have those individual moments alone in the middle of the night.' 

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Proud parents: Last year, Josh spoke about how much he loves being a father, as announced on the Live! With Kelly and Michael show last year that it had put 'everything into perspective'