Among Sanji's physical traits are his distinctive eyebrows. Both form a spiral but at different ends. His right eyebrow forms a spiral at the outer end, while his left eyebrow forms a spiral at the inner end. This means his face is asymmetrical with the position of his eyebrow spirals. This, however, is not fully seen due to his hairstyle. He still gets very upset if somebody, typically Zoro, mocks him over the spirals. Though, on rare occasions, Sanji's other eye was seen in the anime, the spiral was never witnessed.
While Sanji's eyes usually seem black (like most males' eyes in One Piece), he was depicted with grey-blue eyes in the anime at the beginning of Thriller Bark Arc.
Sanji almost always wears a black, double-breasted suit with a tie and a long-sleeved, buttoned shirt of varying colors, usually orange, blue, or black, with or without pinstripes. His fashion does change at times.
Drum Island Arc, he wore a brown coat with a furry outlining.
During the Alabasta Arc, he would wore a blue desert attire, he has also worn orange sunglasses during this arc.
During the Skypiea Arc, he wore a pink dotted shirt with black knee-length pants.
During the Davy Back Fight Arc, he wore a lavender shirt with a blue tie.
During the Water 7 Arc, he didn't wear a suit jacket, but a black vest over an orange, pinstriped shirt.
During the Post-Enies Lobby Arc, he wore a darker lavender shirt with a red tie.
During the Straw Hats' separation, Sanji is coerced into dressing as a typical okama, complete with a wig and heavy makeup, though reverts to his usual outfit and appearance sometime after that.
He also wears dress shoes, mostly for his Black Leg Style. These shoes are extremely durable, and were designed to increase the power of his attacks, though he can attack sufficiently without them as shown in his fight against Kuroobi. Sanji is also a chain-smoker, and is rarely seen without a cigarette.
Punk Hazard, he wears a full black three-piece suit.
While on Punk Hazard, he was given a double-breasted black coat by Kinemon, for the cold, using his unnamed Devil Fruit ability.