The Ultimate Backstreet Boys Concert Checklist, From Butterfly Clips to an All-White Outfit

Hosaily Roll-on Holographic Body Glitter ($7, originally $8)

Remember dousing yourself in body glitter before a big dance, sporting event, or even just a regular school day? Body glitter, especially roll-on, was a very big part of my childhood, and it makes the perfect finishing touch for a Backstreet Boys show. Fans were glistening in the crowd, and I was actually so jealous I didn't have any. If I were to go back, I'd 100 percent purchase this.

Hohamn 120 Pcs Glitter Galaxy Temporary Tattoos ($7)

They're not strictly necessary, but temporary tattoos are a fun addition that I noticed a few fans wearing. I especially loved space-themed ones like these. If you're unsure how to add a touch of blue, consider a rocket ship or a blue astronaut. They're perfectly on theme and incredibly cute, too.

Jasverlin Glitter Mini Butterfly Hair Claw Clips ($8)

Nothing says early aughts like butterfly clips, and they were everywhere at the Backstreet Boys show. I popped a few into the front of my hair for a little throwback moment, but fans really went all out with space buns and braided looks — total Y2K energy. The best part? You don't have to hunt them down at Claire's anymore, just grab a pack on Amazon and relive your teen-dream era with two-day shipping.

Hanes Ecosmart Cotton Tank ($9, originally $11)

I was heavily influenced by Kendall Jenner's viral Hanes tank and can attest to its versatility. I've worn it lounging around the house, out to dinner, and now to a Backstreet Boys concert. I seriously love it, and it's especially great for layering when you want that early-aughts vibe. Keep in mind that this is a boys' tank, so I went with an XL for the size. It fit a little big (a large would've been perfect), but it still worked out just fine for my 'fit. Read my Hanes Ecosmart Cotton Tank review.

Editor Quote: "Aside from the unbeatable price, there's honestly a lot to love about this ribbed white tank. For starters, the cut does something my usual tanks just don't. That swooped neckline? It somehow makes the whole thing look effortlessly chic. Plus, it goes with anything. Sweatpants? Definitely. Denim shorts? Obviously. A skirt and some jewelry? Absolutely. Case in point: Jenner styled hers with leather pants, and it looks totally high fashion." — Haley Lyndes, assistant shopping editor

knliwkm Rimless Rectangle Sunglasses ($15)

Yup, everyone was rocking these rectangular sunglasses — the same style the Backstreet Boys themselves have worn. I personally loved the pair with the butterfly detail (very Y2K), and the light blue lenses instead of dark ones are a nice touch, so you can actually see. Trust me, you'll want to take in every visual The Sphere has to offer.

BodyJ4You 12PC Tattoo Choker Necklace ($20)

Choker necklaces were everywhere — including on me. I went with a white one, but plenty of fans used theirs as their touch of blue. However you choose to wear it — on your neck, wrist, or even leg — chokers were giving total early-2000s nostalgia. Honestly, I felt like I was getting ready for a middle school dance all over again.

Y&R Direct Clear Bag Purse ($24)

The Sphere has a strict bag policy. It's called a "no bag policy," though that's not entirely accurate — you can bring a bag inside. The rule mainly restricts large bags and backpacks. Only small clutches, purses, or fanny packs, roughly 6 x 6 x 2 inches, are allowed. That "roughly" is key: as long as your bag is close to that size, you'll likely be fine — they're definitely not measuring down to the millimeter. That said, finding a bag that small is surprisingly tricky. For example, this crossbody measures 8.3 x 4.9 x 3.3 inches. Its length is just slightly over the limit, but it would still be allowed.

Carbon38 Strappy Tank in Melt ($108)

This tank top has to be one of my favorite purchases ever. I wear it all the time — the material is buttery soft, and the cut is so flattering. The fact that I've owned it for two years without a single stain on its gorgeous white fabric is kind of crazy, but that just shows how much I value it. It made the perfect layering piece under my Hanes tank for the concert, and the built-in bra is such a nice touch. That said, you'll get plenty of wear out of this top on its own, too.

New Balance 9060 Sneakers ($150)

I've had my New Balance 9060s for a while now and take great care of them because I love them that much. To me, they felt like the perfect choice for the "Into the Millennium tour": sleek, space-inspired, and just a little intergalactic. While they don't feature a pop of blue, they still fit the aesthetic perfectly. The tour's whole theme was futuristic — hence the name — so the sneakers felt right on brand (and, of course, incredibly comfortable).

J.Crew Cosmo Pant ($158)

Funny enough, I actually wore pajama pants that are no longer available to shop (sad), but these ones from J.Crew are very similar — both in material and look — and would be a great alternative if you're going for a style like mine. I personally loved wearing a comfortable, lightweight pair of pants to the show (we're in Vegas, after all). You can even grab them in ivory, too. If you're looking for another pair of pants to wear, cargo pants were another popular pick.

Haley Lyndes is a shopping writer and editor with more than seven years of experience in the publishing space. Specializing in home and lifestyle, she covers everything from furniture and mattresses to beauty products and fitness gear. Her writing has appeared in BuzzFeed, Travel + Leisure, and Real Simple.

Travel and expenses for the author were provided by World of Hyatt and Chase for the purpose of writing this story.