Royal Ascot got off to a rainy start, so hats off to the racegoers who brought a bit of colour to the sodden racecourse with their inventive headgear. While the real fashion show kicks off on Friday at Royal Ascot's Ladies Day, there have already been plenty of hair-raising hats. In this gallery, we look at this year's most fabulous fascinators and bonkers bonnets.

Ascot 2016 hats
Ascot 2016 hatsToby Melville/Reuters
Ascot 2016 hats
Patriotic and pro-EU hat-wearersToby Melville/Reuters
Royal Ascot hats
A confectionery-inspired garmentJustin Tallis/AFP
Royal Ascot hats
Cone headToby Melville/Reuters
Ascot 2016 hats
A dog's lifeToby Melville/Reuters
Ascot 2016 hats
More patriotismAndrew Boyers/Reuters
Ascot 2016 hats
Andrew Boyers/Reuters
Ascot 2016 hats
Clearly a darts fanToby Melville/Reuters
Royal Ascot hats
Piano-inspired hatJustin Tallis/AFP
Royal Ascot hats
Justin Tallis/AFP
Ascot 2016 hats
Andrew Boyers/Reuters
Ascot 2016 hats
Bee-shaped hatToby Melville/Reuters
Ascot 2016 hats
Andrew Boyers/Reuters
Ascot 2016 hats
A hat or a flower?Toby Melville/Reuters
Ascot 2016 hats
Julian Herbert/Getty Images
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Charlie Crowhurst/Getty Images for Ascot Racecourse
Royal Ascot hats
Rose-inspired headgearAndrew Boyers/Reuters
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Toby Melville/Reuters
Ascot 2016 hats
Harry Trump/Getty Images
Ascot 2016 hats
Justin Tallis/AFP
Ascot 2016 hats
Chris Jackson/Getty Images
Ascot 2016 hats
Chris Jackson/Getty Images
Ascot 2016 hats
Justin Tallis/AFP
Ascot 2016 hats
Charlie Crowhurst/Getty Images for Ascot Racecourse
Ascot 2016 hats
Charlie Crowhurst/Getty Images for Ascot Racecourse