There's a billion and one wedding traditions couple can choose to follow (or not to follow) on their wedding day.

Among them? The tradition of the bride wearing white on their big day - which looks like it could be the next one on the way out. Pinterest's 2018 Wedding Report showed that more and more brides are opting for alternative colours - as well as styles - when it comes to their outfits for their big day. From Poppy Delevingne to Keira Knightly, celebs have proven that putting your own twist on the classic wedding day style is just as jaw-dropping as the traditional white dress. Here are seven of our favourite alternative celebrity wedding day outfits.

Emily Ratajkowski

The model wowed when she wore a mustard-coloured pantsuit from Zara for her surprise wedding Sebastian Bear-McClard this week.

Dianna Agron

  https://www.instagram.com/p/BLqxxfajHhU/ The Glee actress wore a stunning off-the-runway nude Valentino gown and a delicate crown when she said 'I do' to Mumford and Sons' Winston Marshall.

Lydia Hearst

https://www.instagram.com/p/BJjDIPxhdSI/?utm_source=ig_embed The model wore a whimsical pink ombré Christian Siriano gown with a high-low hemline when she exchanged vows with comedian Chris Hardwick in 2016.

Kiera Knightly

https://www.instagram.com/p/BAN4z2ISkCz/ The Pirates of the Caribbean actress is a huge fan of the short, ballerina-like Chanel Haute Couture dress that she wore for her 2013 wedding - so much so that she's worn it on a few different red carpet appearances since.

Shenae Grimes

https://twitter.com/shenaegrimes/status/332891839512313856 The actress wore a stunning black tulle Vera Wang gown with a graduated colour scheme when she wed Josh Beech in 2013.

Poppy Delevingne

https://www.instagram.com/p/3Caz6lFKxi/?utm_source=ig_embed Poppy wore a custom-made Emilio Pucci gown by peter Dundas when she married James Cook. Peplum and those flowers? Love.

Piper Perabo

https://www.instagram.com/p/rCuZ6Bxfpm/?utm_source=ig_embed When she walked down the aisle at her 2014 New Orleans-themed nuptials, the Coyote Ugly star wowed in a long-sleeved silver Michael Kors gown.