Just 21 Midi Dresses That Match Any New Year's Mood: Sexy, Polished, Casual, or Festive

The square neckline and relaxed silhouette of this Nasty Gal Jersey Plunging Sweetheart Neckline Slit Front Midi Dress ($18, originally $60) make it extremely wearable. Pair it with a dainty chain necklace or a chunky gold style, and finish with stiletto heels.

The subtle print of this Nasty Gal Satin Animal Jacquard Midi Dress ($12, originally $60) gives it visual interest, while the ruched bust and square neckline give it a feminine edge. Paired with your favorite pair of mules, it makes a decidedly polished, head-turning ensemble.

In a sea of wrap dresses, this Nasty Gal Wrap Front Satin Midi Shirt Dress ($30, originally $99) will definitely stand out. Cut in gleaming satin that will nicely hug your body without making you feel restrained, it will pair well with heels and a chunky gold necklace.

Creating ethical clothes that focus on form and function, Wray founder Wray Serna has earned a much-deserved spot on our radar. You can see the influence of art and design in this Wray Dion Dress ($209, originally $298).

This Nasty Gal Devore Animal Cowl Neck Midi Slip Dress ($60, originally $119) has a casual elegance to it that makes it a favorite to slip in and out of. The animal devore design and cowl-neck silhouette add a playful touch.

For the minimalists looking for flattering pieces that won't cost a fortune, multibrand retailer Source Unknown has something suitable for every style. Its designs feel fresh yet timeless, and they'll be sure to earn a permanent spot in your closet, including this Source Unknown Twist Bustier Dress ($68, originally $82).

This sun-drenched Jonathan Simkhai Mabel Chain-Detailed Cutout Crepe Midi Dress ($323, originally $645) makes a luxuriously elegant and fluid choice for family affairs, dinner parties, or intimate reunions. We love the chunky gold chain embellishing the waist cutout, as well as the asymmetric silhouette.

This Norma Kamali Slip Dress ($99, originally $165) is a covetable style, designed in a luxurious-looking velvet and drenched in an eye-catching shade of pink. Norma Kamali has, in fact, made the perfect velvet party dress.

This & Other Stories Off Shoulder Tulle Midi Dress ($249) looks straight out of a fairy tale with its voluminous neckline and air of royal elegance. Save it for a fancy gala or a themed holiday party.

Make your New Year's dress pop with an eye-catching print, as seen in this Nasty Gal Abstract Halterneck Midi Slip Dress ($21, originally $69). The halterneck silhouette gives it a vintage feel, while the color palette makes it modern and fun.

This BR x Harbison Smocked Apron Dress ($169) belongs in their fancy evening selection. The bow dials up the glamour.

This Romwe Cocktail Midi Dress ($30) makes a slinky number for a girls' night out or a hot date. The side slit amps up the sex appeal.

Reviewers are praising the flattering fit and rich green palette of this slinky Princess Polly Goddess Midi Dress ($75). The fabric looks soft, stretchy, and so comfortable — making it the perfect choice for twirling away all night.

The back of this Zara Chain Strap Satin Effect Dress ($60) alone has me sold. It's honestly jaw-dropping.

This H&M High-Sheen Dress ($25) looks luxe, thanks to the shimmering fabric and easygoing fit. The color also gives it a sort of regal elegance.

As a major destination for super-polished dresses, Rahi has earned its place in our evening wardrobes. Launched in 2016, all the brand's designs are sustainably made, and this Rahi Bondi Jacie Midi Dress ($105, originally $150) is perfect for fashion-conscious consumers.

This Mac Duggal Floral Beaded Midi Sheath Dress ($495) is as winter wedding ready as it is for a New Year's celebration. The beading will dazzle on the dance floor.

The green jewel tone of this J.Crew Open-Back Silk Charmeuse Dress ($230, originally $328) gives it a luxe appearance, while the side slit amps up the sex appeal. It also features a head-turning open back, which makes it an all-around irresistible look.

This Enza Costa Silk Rib Angled Neck Midi Dress ($225) oozes sex appeal, confidence, and femininity. It's a great one to dress up or down, depending on the occasion.

This lustrous Self Portrait Lace-Detailed Taffeta Midi Dress ($555) is cocktail ready. It features slightly dramatic puff sleeves, a pleated bodice, and ruched detailing for a flattering fit and polished look.

The green shade of this Zara Weave Dress ($90) is so rich, it will honestly make anyone stop and stare. The length makes it perfect to take from the office to afterwork parties, including weddings.