Plus Size Special Occasion Dresses & Suits in Japan: What to Wear and Where to Shop
Wedding Guest
Wedding guest attire for female guests in Japan is elegant, modest, and formal.
When choosing an outfit to attend a wedding in Japan, avoid white (including ivory and cream) or anything that appears "traditionally" bridal in a Western sense. Japanese brides often have several outfit changes during the wedding ceremony and reception, with ball gowns commonly worn. White ball gowns are a popular choice for ceremonies, while colorful ball gowns may be revealed as the second or third dress.
Wearing black to a wedding is acceptable, whether it’s a gown or a suit. However, pair your outfit with shoes, handbags, and accessories in other colors to avoid looking like you're attending a funeral (where guests generally wear only black).
If you choose to wear a dress, opt for knee-length or tea-length (mid-calf) with a conservative neckline. If cleavage is visible, consider a higher neckline. In the past, wearing sleeveless dresses wasn't common but is becoming more popular with modern wedding parties. If you choose a sleeveless dress, pair it with a shawl or jacket to wear during the ceremony portion of the wedding. Lace or sheer sleeves are acceptable, as long as bra straps aren’t visible.
Formal suits for weddings are comfortable, culturally acceptable, and versatile for other occasions. Since formal suits tend to be black, avoid black accessories. A suit for special occasions differs from a business suit, but if needed, a black business suit with a blouse and accessories can suffice. Dress it up with statement jewelry and a formal handbag.
If you are shopping for a plus size formal dress on Japanese websites, search for "Dress" rather than "One Piece", as dresses labeled one-piece tend to be more casual.
What to look for:
Knee to ankle-length formal dress
Conservative neckline (don't show cleavage or bra straps)
Covered shoulders (or shawl/jacket)
Avoid wearing white, all-black or full ballgown-style dresses
Pearls or elegant statement jewelry
Closed-toed shoes
Small handbag
Where to shop:
Re-J & Supure (Sizes LL-4L)
Uplume (Size LL-4L)
Nissen Smileland (S-8L)
Eur3 (L-4L)
Shein JP (orders arrive within 10 days)
Graduations and Opening Ceremonies
For graduation and opening ceremonies in Japan, special occasion suits are a popular choice for women. Opt for dark or muted tones such as black, navy, or dark grey. You can choose either a pantsuit or a skirt suit, ensuring the skirt is knee-length and worn with stockings. Avoid pairing the suit with a crisp white button-down, as it may resemble job interview attire. Instead, select a formal blouse in neutral or muted tones. Keep your blouse, shoes, and accessories simple and elegant—avoiding bright colors or bold statement pieces.
Everyone in attendance, including staff and guests, is expected to wear formal clothing.
Formal dresses are also acceptable. Many online retailers offer sets that include a dress and matching jacket for these occasions for your shopping convenience, as jackets (long or 3/4 length, opaque sleeves) are often required.
Where to shop:
Nissen Smileland (S-10L)
Uplume (Size LL-4L)
Alinoma (Size LL-10L)
Big M One (Size 2L-8L)
Funerals
Black is the only acceptable color for funerals in Japan. Women typically wear formal suits or conservative black dresses. If you choose a black dress, it should have long, opaque sleeves, and the neckline should cover or reach near the collarbone. Both the knees and shoulders must be covered. Accessories and colors should be minimal, with simple stud earrings being appropriate. Shoes should be black, closed-toe, and plain, like loafers, flats, or low heels. It's customary to wear little to no makeup and avoid bright nail polish, keeping a respectful, subdued appearance.
Where to shop:
Nissen Smileland (S-10L)
Uplume (Size LL-4L)
Alinoma (Size LL-10L)
Big M One (Size 2L-8L)
Other Special Events in Japan
Music recitals, special shrine visits, charity events, and school functions—if you’re in Japan long-term, you'll likely attend various formal occasions. Special occasion suits can be expensive but are worth the investment. A black suit is especially versatile and culturally acceptable for almost any event. Simply change accessories depending on the occasion.
Purchasing from a Japanese brand ensures your attire meets local standards. If you're plus-size, check product measurements and consider tailoring for a better fit, as Japanese suits may have narrower shoulders, smaller busts, or hips. Always verify garment measurements before buying, and find a tailor who can work with your measurements. It's worth investing in an investment piece.