What would you wear to meet a Duchess? Jackie O tells you.

Jackie O is one half of Sydney’s leading radio duos. Kate Middleton is one half of one of the world’s most powerful couples. What happened when those worlds collided?

Last night, these two high-profile women crossed paths – and because we couldn’t go with her, Jackie O kindly documented the whole thing on social media. Thanks, Jackie!

Before heading to the royal reception at the Sydney Opera House with her co-host Kyle Sandilands, the popular radio personality was faced with the ultimate wardrobe dilemma: What does one wear in the presence of a Duke and Duchess?

Deciding between a white Stella McCartney gown and a floral Max & Co creation was proving tricky, so she did what any social media-savvy lady would have done in the same situation – she turned to her friends for a bit of help.

And by "friends" we mean her several thousand Facebook and Instagram followers. Now THAT's how you crowd source an opinion.

The 106.5 Kiis FM audience cast their votes, and the floral number was selected. So what else does it take to get prepared for a royal engagement? This video reveals all...

CLICK THROUGH this gallery to see what else Jackie posted in the lead-up to her Kate and Wills encounter...