18th Birthday Party Decorating Ideas

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Whether you're turning 30 or a friend is, a few things are likely going through your head. Namely, "How on earth am I going to celebrate?" But don't worry—we're here with the answers to help you navigate your thoughts. First, as the old birthday quote goes, time flies when you're having fun. Second, there are so many ways to celebrate a 30th birthday that it all comes down to personal preference. To help you figure out what yours is, we've scoured the web for the best 30th birthday party ideas and themes worth considering for your big bash.

Whether you're a bourbon and beer lover who wants to toast to the next decade of your life, a Friends fanatic who wants to keep your favorite characters in the mix, or an old soul who wants to celebrate like it's the 1920s, we've got you covered. Just keep in mind that these ideas are meant to turn on a lightbulb in your head, not serve as the only decoration or food at your bash. So, when scrolling through these birthday party ideas, think about all the ways these themes could play out even bigger with the right décor. And, most importantly, cheers to 30 years! You've earned your slice of delicious birthday cake.

30th birthday friends cookies

Instagram / @thetennesseesugar

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'Friends' 30th Birthday Party

30th birthday beer cookies

Instagram / @sprinkledsweetcookies

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Aged 30 Years Birthday Party

30th birthday thiry flirty cookies

Instagram / @dough_by_mo

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Thirty, Flirty, and Thriving Birthday Party

Anyone who's seen 13 Going on 30 is probably going to be obsessed with these teal-and-white sweet treats. All the party-goers at your 30th will too.

See more at Dough by Mo .

SHOP BLUE ICING

30th birthday in memory of youth cookies

Instagram / @krisricci

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In Memory of Youth Birthday Party

Let's get one thing straight: 30 isn't old. However, if you feel like it's a departure from your youth, these cookies set the mood for the perfect party theme.

See more at Krissy Ricci .

SHOP BLACK ICING

30th birthday roaring 30s

Instagram / @pinkclariss

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The Roaring 30s Birthday Party

This Great Gatsby-themed cake is begging to make an appearance at your party. Just look at how regal it is! Pair it with bubbly and all your besties for the best 30th birthday soirée.

See more at Pink Clariss .

SHOP GOLD FEATHERS

30th birthday lipstick swatch cake

Instagram / @thedessertjar

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Lipstick Swatch Cake

While this cake isn't technically an ode to lipstick, we can't help but envision all our favorite lip shades lined up. Which is exactly why this feminine cake is great for the beauty lover in your life.

See more at The Dessert Jar .

SHOP THIRTY CAKE TOPPER

Etsy / AtelierElegance

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Talk 30 to Me Cake Topper

This festive cake topper is perfect for any confection, and best of all, it comes in a variety of colors so you can match it to the cake of your choice.

Etsy / blueberrysprinkles

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Welcome to Level 30 Banner

If you love video games, this banner can set the tone for your party. Pair it with game-inspired cupcakes, cookies, cocktails, and hors d'oeuvres.

30th birthday crystal ball cookies

Instagram / @katbreebakery

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Crystal Ball Birthday Party

These crystal-inspired cookies look as magical as we're sure they taste. And what better way to pay homage to a love of crystal healing than with your very own 30th ball?

See more at KatBree Bakery .

SHOP SQUARE COOKIE CUTTER

Etsy / PartyHaus

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Hello 30 Balloons

Looking to welcome your thirties with open arms? These rose gold balloons will help set a playful vibe for your party.

30th birthday pink cookies

Instagram / @clairelysweetcookies

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Etsy / urenvited

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Dirty 30 Banner

Another way to celebrate is by throwing a party with a "Dirty Thirty" theme. This banner will help set the tone.

30th birthday 80s cookies

Instagram / @cookiegrahams

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So Happy to Be 30 Birthday Party

What better way to celebrate your thirties than to pay homage to the year you were born? These retro-inspired cookies would be the perfect dessert for a throwback birthday bash.

See more at Cookie Grahams .

SHOP SUNGLASSES COOKIE CUTTERS

Etsy / WhiteRabbitsDesign

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Vintage Birthday Party

When it comes to fine wine, the older, the better. The same often applies to people. So celebrate your 30th with these vintage balloons that can be customized to your birth year.

Etsy / TeeHeeHeeShirt

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Limited Edition Birthday Party

You're one of a kind, so why not throw yourself a party that lets the world know your limited edition? Plus, you'll be super cozy all night long in this fun hoodie that you can wear over and over again to relive the memories.