What to Wear Under Spaghetti Strap Tops and Racerback Tanks

Summer weather is officially here, and with it comes all the cutest tops—think spaghetti straps, racerback tanks, and sexy open backs. The only downside? Figuring out what to wear underneath without showing off your entire bra situation or spending the whole day feeling uncomfortable.

If you’ve ever searched what to wear under spaghetti strap tops or struggled with your outfit trying to hide your bra straps, I get it. I’ve been there, Googled that.

After a lot of trial and error (and too many wardrobe malfunctions to count), I’ve found three solid invisible bra options that actually work for tricky summer tops. Whether you’re looking for full support or just need a little coverage, these picks have you covered—literally.

Here’s a breakdown of what’s worked for me—ranked from most to least support—plus a few tips for staying comfortable and confident all day long.

1. Strapless Bras – Classic and Supportive

Let’s start with the classic. A well-fitting strapless bra is one of those wardrobe staples that just makes sense. It’s perfect for spaghetti straps, tube tops, off-the-shoulder pieces—basically, anything you’d rather not show your straps with. This one is a closet staple and the perfect bra for spaghetti strap tops.

Pro Tip: Look for strapless bras with silicone lining or a grippy band to keep everything in place. If you’ve ever dealt with a strapless bra slowly sliding down, you know how important this is. A good one will give you lift and stay put all day.

2. Adhesive Bras – Great for Backless & Racerbacks

I was skeptical at first, but hear me out: adhesive bras are game changers. The trick is applying them correctly and choosing a brand with strong, skin-safe adhesive.

They’re perfect for racerback tanks or anything with a low or open back, and some versions even offer a bit of lift. I once wore one to a wedding and had to rip it off like a bandaid at the end of the night—zero slippage.

✔ Quick Tip:

Make sure your skin is clean and dry before applying, and go for a trusted brand with strong (but skin-safe) adhesive. Most are reusable, too, if you clean them properly.

3. Nipple Covers – Minimal & Comfortable

For days when you want comfort above all else, nipple covers are a lifesaver. They offer just enough coverage for sheer tops or lightweight tanks, especially if your top already has some built-in support or lining.

I found a great set on Amazon in a nude shade that actually blends with deeper skin tones (finally!), and they work perfectly under white or light-colored tops.

✔ What to Know:

Many nipple covers are disposable, but you can also find reusable silicone versions for more sustainable wear. They’re a great no-fuss option when you want to keep things minimal.

At the end of the day, the best undergarments are the ones that make you feel supported and confident. Whether you’re team strapless bra or all about those invisible nipple covers, the goal is to wear what feels good underneath—so you can focus on showing off your favorite summer looks.

So the next time you’re wondering what to wear under spaghetti strap tops or how to keep your bra hidden under a racerback tank, save this post for a quick solution.

Related: Black Summer Dresses on my Wish List