The wedding day has somehow become the wedding era.

From engagement photos to the farewell brunch, brides and their guests now have a full calendar of events—and just as many outfits.

Engagement party, bridal shower, bachelorette weekend, rehearsal dinner, ceremony, after-party…we're talking multiple looks, sometimes even in the same day.

That’s why so much hinges on having the right undergarments within reach. Whether you're the bride, a bridesmaid or on the guest list like you are, having a collection of versatile shapewear and foundation pieces ready to go ensures that each outfit fits smoothly and comfortably, without ever worrying about a wardrobe malfunction living on eternally in the wedding photos.

To make prepping easier, here’s exactly what Alexa Gementgis, our expert bras and panties buyer—and newlywed!—recommends having on hand during wedding season:

The Convertible Bodysuit: Your Most Versatile Piece

If there’s one item that deserves a spot in your special occasion wardrobe, it’s a convertible strapless bodysuit.

These one-pieces provide smoothing over the stomach, sides and back while keeping things comfortable. Alexa’s favorites have removable and adjustable straps so they can be worn strapless, halter, crisscross or traditional, depending on the dress. A hook-and-eye gusset also makes bathroom breaks easy—a detail you’ll appreciate during long celebrations.

Bodysuits are tailor-made for bridal showers, bachelorette outfits, under bridesmaid dresses and wedding guest looks, and even the ceremony gown. With styles ranging from medium control to extra-firm shaping, you can choose the level of sculpting that makes you feel most confident.

To try: TC Fine Intimates Extra Firm Control Convertible Bodysuit (bands 32-40 and cups B-DD); Bare Shaping Strapless Bodysuit (bands 34-40 and cups C-H); Wacoal Red Carpet Medium Control Convertible Bodysuit (bands 34-40 and cups C-G); Miraclesuit Modern Romance Shaping Bodysuit (sizes S-2XL).

Slip Shorts: The Unsung Hero

Not every dress calls for serious shaping. Sometimes you just want a smooth, comfy layer that lets you dance all night.

“Personally, I love a slip short,” says Alexa. “They’re perfect for eliminating visible panty lines, stopping thigh friction and creating a sleek silhouette under lightweight fabrics, like chiffon or satin.”

They don’t compress or sculpt, which makes them extremely comfortable for all-day, all-night wear, especially for outdoor weddings and DJ sessions on the dance floor.

To try: Bare The Invisible Slip Short (sizes S-3XL); Wacoal Body Base Shorty (sizes S-2XL).

Strapless Bras That Actually Stay Put

Formalwear is famous for tricky necklines: strapless gowns, one-shoulder silhouettes, sweetheart cuts, low backs. That's why a great strapless bra is still essential.

Alexa says fuller busts should look for features like underwire and structured cups for lift and support, a silicone grip lining to prevent slipping, side panels for shaping and optional convertible straps to get year-round use out of them.

A well-designed strapless bra should stay in place from ceremony to last dance, so you’re not constantly tugging it back up.

To try: Wacoal Red Carpet Strapless Bra (bands 30-44 and cups B-I); Panache Alice Ultimate Balcony Strapless Bra (UK-sized bands 30-40 and cups D-J); Bare The Absolute Minimizer Strapless Bra (bands 34-40 and cups C-G).

Corsets & Bustiers for Dramatic Dresses

For gowns with low backs, unconventional silhouettes or not a lot of structure, corsets and bustiers are gorgeous game changers.

These lingerie-like pieces have boning for structure and shaping, low or even backless cuts that stay out of sight and curve-enhancing support that play up the waist at the same time. They’re excellent for wedding welcome events, formal rehearsal dinners, fitted guest dresses and backless bridal gowns. (You can even wear one on its own or under a jacket or blazer.)

To try: Bare The Longline Multiway Strapless Bra (bands 32-42 and cups B-H); Dominique Brianna Strapless Low Back Corset (bands 30-48 and cups C-G); Dominique Noemi Strapless Backless Bustier (bands 32-44 and cups A-F).

Mid-Thigh Shapers for Sleek Silhouettes

When wearing body-skimming dresses, mid-thigh shapewear comes through. These styles smooth the waist, hips and thighs, stop thigh-chafing and eliminate lines under form-fitting fabrics.

Pair them with your own bra of choice or look for one with built-in strapless bra support for a fully seamless foundation under body-conscious dresses.

To try: Wacoal Red Carpet Firm Control Strapless Mid-Thigh Shaper (bands 34-40 and cups C-G); Bare The Smoothing Lace Mid-Thigh Shaper (sizes S-3XL).

Build Your Wedding Season Foundation Wardrobe

Whether you’re the blushing bride or attending the festivities, a drawer stocked with the right undergarments can escort you with confidence through the entire season.

Guests can find everything you need in our curated collection of solutions. For the bride (or gifts for the bride-to-be), visit The Wedding Shop.