Tamsin Egerton is radiant as she holds new baby close during family outing with Hollywood hearttrob beau Josh Hartnett in sunny London

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They welcomed their first child in 2015, before confirming the latest arrival with the appearance of a double buggy last month.

And Tamsin Egerton looks as though she is taking to second-time motherhood swimmingly as she was seen cradling her youngest close during an outing with her Hollywood heartthrob partner Josh Hartnett in London on Tuesday. 

The 28-year-old St Trinians star was glowing as she held onto her tot with natural ease while the Pearl Harbour actor, 39, gazed upon the pair lovingly. 

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Mummy dearest: Tamsin Egerton looks as though she is taking to second-time motherhood swimmingly as she was seen cradling her youngest close during an outing with her Hollywood heartthrob partner Josh Hartnett in London on Tuesday

Tamsin was first spotted with the double pram last month, in confirmation that she had welcomed her second child with beloved beau Josh.

As she stepped out in her native city on Tuesday, the stunning star scraped her blonde locks into a bouncy ponytail while sporting natural looking make-up.  

In casual garb, she pulled on a hoodie with a black camisole underneath while also rocking simple light blue jeans.

Prior to their outing in Hampstead last month, the actress had last been seen still heavily pregnant in June. MailOnline contacted her representatives at the time.

Happy days: The 28-year-old St Trinians star was glowing as she held onto her tot with natural ease while the Pearl Harbour actor, 39, gazed upon the pair lovingly

Hold me close: Tamsin was first spotted with the double pram last month, in confirmation that she had welcomed her second child with beloved beau Josh

The couple welcomed their first child in 2015, but her name remains unknown, and the pair continued to remain tight-lipped for the duration of their second pregnancy.

However, Tamsin appeared to confirm she was expecting once again at the Vanity Fair Oscars after-party in February, by poking 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, and gushed having a child had 'put everything into perspective'.

Sweet times: The couple welcomed their first child in 2015, but her name remains unknown, and the pair continued to remain tight-lipped for the duration of their second pregnancy

Having a laugh: Speaking on the Live! With Kelly and Michael show, he explained: '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

Speaking on the Live! With Kelly and Michael show, he explained: '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.'

Despite admitting having a newborn was tiring, he went on sweetly: 'The best moments are when you have those individual moments alone in the middle of the night.'