Kate Walsh put on an eye-popping display at Paris Fashion Week on Tuesday as she went commando in a very racy white gown.

The Grey’s Anatomy star, 57, stepped out in Stephane Rolland haute couture for the Fall/Winter 2025/2026 show with her Australian fiancé Andrew Nixon.

The actress, who relocated to Perth to be with Andrew, stunned onlookers with her raunchy look, which featured a revealing slit from her chest to her hip. 

Showing off her toned tummy, Kate donned a sultry pose as she hit the white carpet on her way into the French venue.

Despite shocking the crowd with her partial nudity, there appeared to be a sheer mesh panel which ensured she kept some modesty at the ritzy event.

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Kate Walsh, 57, put on an eye-popping display at Paris Fashion Week on Tuesday as she went commando in a very racy white gown 

The Grey’s Anatomy star stepped out in Stephane Rolland haute couture for the Fall/Winter 2025/2026 show with her Australian fiancé Andrew Nixon

The actress, who relocated to Perth to be with Andrew, stunned onlookers with her raunchy look, which featured a revealing slit from her chest to her hip

Kate opted for large pieces of jewellery, with a chunky ring and bracelet featuring huge blue stones with diamond bands. 

She was also seen wearing a pair of dark designer glasses as she slicked back her locks into an artful up-do and slicked on a minimal makeup look.

The US star relocated to Western Australia to be with Andrew after they met in 2020, with The Umbrella Academy actress confirming their engagement in October 2022.

Kate, who hails from California, recently revealed she has fallen in love with Australia’s laid-back lifestyle and is now happy to call Perth home.

‘I really love Western Australia… I think nature here eclipses everything. It drives me,’ she told news.com.au.

‘I like the slowness. It’s really good for me. And then you go back overseas and you’re like, “Oh my god. People are insane.”‘

Kate said she often flies to America for filming before returning to Australia when she is free from her work commitments to spend more time with her fiancé.

‘I feel very fortunate I can pop back to LA, go to work, and then come back here and live my best life,’ she gushed.

Showing off her toned tummy, Kate donned a sultry pose as she hit the white carpet on her way into the French venue

Despite shocking the crowd with her partial nudity, there appeared to be a sheer mesh panel which ensured she kept some modesty at the ritzy event

Kate opted for large pieces of jewellery, with a chunky ring and bracelet featuring huge blue stones with diamond bands

She was also seen wearing a pair of dark designer glasses as she slicked back her locks into an artful up-do and slicked on a minimal makeup look

‘I needed my life to be a lot more balanced. And then, I fell in love with an Aussie, and here I am. I love it. I’m very grateful,’ she continued.

Kate reportedly met Andrew, who works for his family business Nixon Farming, on a cruise just before the start of the coronavirus pandemic in early 2020.

The Nixon family have been farming malt barley and canola in the Moora/New Norcia area of Western Australia for close to 100 years, according to their website.

Before her relationship with Andrew, Kate was married to Day Shift executive producer Alex Young, but they went their separate ways in 2008.

Their 15-month marriage officially came to an end in 2010, with the couple citing ‘irreconcilable differences’ as the reason for the split.