To help, we came up with the ultimate gift guide for celebrating 21st birthdays ... A show-stopping birthday cake In all 21 years, they've never had a birthday cake quite like this one.

Here are our picks for the best 21st birthday gifts. For the Fashion-Forward Friend: Grab them a versatile nylon Baggu in their favorite color — we especially like Candy Apple and Lapis.

On Tuesday, the "Vampire" singer marked the milestone birthday by taking to Instagram to share multiple celebratory snaps — including one showing her posing next to a "spill ur guts" cake.

So! To ease the decision process, we've compiled a handy list of 21st-birthday party ideas that'll make you feel like absolute royalty. We know that everyone likes to celebrate differently ...

Millie Bobby Brown rang in her 21st birthday ... and sand-covered cake. At the end of the video, Bobby Brown mouths the lyrics “except for the fact it was my birthday, my stupid birthday ...

Someone you love is turning 21, and it's time to find them the perfect birthday gift ... For the Host: Send them into their 21st year with a wealth of cocktail knowledge. This comprehensive ...