Rose Byrne, 46, shows off her youthful looks as she poses with partner Bobby Cannavale at opening night of her Broadway play Fallen Angels

Rose Byrne is celebrating her latest career high with a lead role on Broadway. 

The Australian actress stars as Jane in the comedic Noël Coward play, Fallen Angels. 

And the 46-year-old was looking fresh and youthful as she arrived on the red carpet for her big night this Sunday. 

The Bridesmaids actress opted for an eye-catching ensemble in bright orange tones, including a brocade slip dress. 

She paired it with a matching coat and accessorised with a diamond choker and clear heels.  

Rose chose a rosy makeup look with a bright red lipstick and wore her brunette locks in a straight bob.  

Joining Rose at the afterparty was her American actor partner, Bobby Cannavale, whom she brought along as her date. 

The genetically-blessed couple partied the night away with actor Paul Rudd and his screenwriter wife, Julie Yaeger. 

It comes after Rose opened up about finding motherhood 'challenging,' admitting that it can come with feelings of shame and a sense of 'losing part of yourself.'

The actress shares two sons - Rocco, born in 2016, and Rafael, born in 2017 - with her long-term partner, Bobby.

While discussing her new 'mum noir' film If I Had Legs I'd Kick You, Rose reflected on how she can relate to her character's experience of motherhood. 

She explained that the constant demands of parenting can mean children sometimes 'lose their shape,' blurring a parent's ability to see them as a distinct little person.

She told The Times: 'That's totally an experience I've had as a parent and there is shame you feel around that.'

Rose continued: 'You don't want to feel like you don't love your child, but there is a grief around becoming a mother, because you lose part of yourself that you will never, ever, ever, ever, ever get back.

'It's okay to grieve that – in fact, we should. Because it's a before and an after.'

Rose recently scored her first-ever Oscars nomination.

Off the back of her Golden Globes win, the Australian actress is nominated for Best Performance by an Actress in a Leading Role for If I Had Legs I'd Kick You.

'I can't believe it. I feel like I've snuck into the back of the bus,' she told The Hollywood Reporter.

'The thought of the legacy and the pageantry and the scale of it, it's impossible to not have that value.

'Of course, that huge kind of legacy and tradition of this ceremony is just undeniable, so to be a small part of that is unbelievable.'

She also gave an update on her pet bearded dragon that her husband Bobby and their kids went to get while she was at the Globes.

'He's doing well! It's for the kids. The kids are very happy,' she added.