Your first steps into adult life may have already begun when you turned 18, but there are so many reasons to celebrate your 21st... So how do you mark this milestone birthday?

Worry not! Hip Hip Hooray know just how important the big 2-1 is, so to get you prepared in style, we've gathered together a selection of our most popular printable 21st birthday invitations and handpicked a couple of personal favourites we know you'll love too!

Those significant birthdays only come around every so often, so getting the key details and finishing touches just right is something that really makes all the difference...

Depending on your theme, style or individual taste we've got a selection of invitations worth throwing a party for - so take a look at our top 8 unmissable invites to ignite your imagination today.

Travel / World Map Themed 21st Birthday Party Invitation

Whether you're travelling the world as part of your celebration, organising a birthday party abroad or simply looking to convey your passion for globetrotting, this one's for you...

Gold Calligraphy & Confetti 21st Birthday Party Invitation

Add a luxurious twist to your birthday with the perfect stationery staple to showcase your shimmering party! Decorated with cascading gold confetti and other beautiful details, this invitation is a must-have for a whole range of different themes and styles.

Pink Flamingo Tropical Themed 21st Birthday Party Invitation

Add a cheeky tropical twist to your 21st with this bold and vibrant invite... After all, who doesn't love a pink flamingo, anyway?

Stylish Classic Car 21st Birthday Party Invitation

Get the finer details of your vintage party sorted with a classic car inspired invite.

Rustic Colourful Bunting 21st Birthday Party Invitation

Is any party truly complete without some colourful bunting? This stunning invite is guaranteed to make a big impression...

Hawaiian Luau Tropical Themed 21st Birthday Party Invitation

Transport you and your guests away to tropical islands afar with a Hawaiian invitation you'll wish you'd come across sooner.

Comic Book Inspired Superhero 21st Birthday Party Invitation

Assemble your ultimate superhero line-up with this indestructible party invite, complete with enough comic book details to please any wannabe caped crusader.

'Pop Clink Fizz' Champagne Prosecco Themed 21st Birthday Party Invitation

With the clink of a champagne glass... the party starts with this evocative invite!