Laura Byrne wears a white lace jumpsuit to Melbourne Cup

She inadvertently sparked engagement false rumours this week, after posting a loved-up snap with her beau Matty 'J' Johnson at a friend's .

And while Laura Byrne won't be walking down the aisle anytime soon, the former Bachelor winner was a vision in white at Melbourne Cup on Tuesday.

The 31-year-old flashed a hint of underwear in a lace jumpsuit that featured flared pants and sheer straps.

Sheer delight! Laura Byrne flashed a hint of underwear in a lace jumpsuit that featured flared pants and sheer straps

Sheer delight! Laura Byrne flashed a hint of underwear in a lace jumpsuit that featured flared pants and sheer straps

She paired the risque look with open-toe sandal heels and a wide-brimmed hat.

The Sydney wore her brunette locks wavy and neatly parted to one side and she wore heavy eye makeup, dewy foundation and lip balm.

Noticeably absent was her marketing manager beau Matty, 31, who opted to skip the star-studded event.

Stunning: The Sydney beauty wore her brunette locks wavy and neatly parted to one side and she wore heavy eye makeup, dewy foundation and lip balm

Racy in lace! She paired the risque look with open-toe sandal heels and a wide-brimmed hat

Laura instead took her former Bachelor love rival Alix McDermott, with the pair posing together for a snap shared to Instagram.

'Giddy up butter cup! Breaking the rules with a jumpsuit,' Laura captioned.

The jewellery designer's Melbourne Cup outing comes a day after she and Matty inadvertently sparked rumours they may be engaged.

Rumour mill in overdrive: The jewellery designer's Melbourne Cup outing comes a day after she and Matty inadvertently sparked rumours they may be engaged 

Rumour mill in overdrive: The jewellery designer's Melbourne Cup outing comes a day after she and Matty inadvertently sparked rumours they may be

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