Please recommend a luxurious dress to wear as a guest at my older sister's wedding.

For a formal wedding guest look, I've selected three pieces featuring understated textures and neat silhouettes. Options range from a mini dress with dimensional lines to a long dress highlighting imported Japanese fabric and shirring details, as well as a flared dress adorned with floral embroidery.

Matching your preference for long lengths, I've selected three pieces great for a wedding guest look. Options include a design with imported Japanese striped fabric and neckline shirring, a design shaped with snap buttons and shirring, and a maxi dress with pintucks that define the waistline.

Matching your requested long length as well as black and navy color preferences, I've selected three pieces. There is a black long dress shaped with central snap buttons and shirring, a cotton maxi dress accentuating the waistline with pintucks, and a navy striped dress featuring imported textured fabric and neckline shirring. Mini lengths and other items were excluded as they did not match the long length condition.

Matching your requested long length, black/navy colors, and budget under KRW 200,000, I've selected three pieces. There is a long dress in stretchy fabric with snap buttons and shirring, a sheer cotton maxi dress with pintuck details defining the waistline, and a flared dress featuring subtle flower dot embroidery and puff sleeves. The striped long dress that exceeds KRW 200,000 and is in the KRW 300,000s was excluded as it did not fit the budget.

Here are a midi-long dress creating a flared silhouette with flower dot embroidery and puff sleeves, and a color-blocked layered midi dress made of sheer Tencel fabric. The snap long dress and pintuck maxi dress priced over KRW 150,000 were excluded as they did not fit the budget.