XX-Small, fits dogs 2"-5" Neck to Tail. PETCO Wag-a-tude Fashion Forever Dress for Dogs has a pink, ruffled cap-sleeve top paired with a pleated, multicolor heart print skirt. Vinyl details include faux belt and heat patch. PETCO Wag-a-tude Fashion Forever Dress for Dogs - Dog Apparel from PETCO.com PETCO Wag-a-tude Fashion Forever Dress for Dogs is made from a cool, comfortable, stretchy cotton/spandex blend for superior comfort and ease of movement. A full outfit in a single garment, our sassy PETCO Wag-a-tude Fashion Forever Dress for Dogs looks like a summer top paired with a pleated skirt. Ruffled cap-sleeve top is two tones of pink with sparkle letters and skirt is embellished with a faux vinyl belt and yellow, green, blue, orange and white heart print. Breed examples for sizing measured from base of neck to base of tail:XX-Small 2-5": Chihuahua, Shih Tzu, Yorkshire Terrier.X-Small 6-9": Bichon Frise, Brussels Griffon, Maltese, Miniature Pinscher, Papillon, Tea Cup Poodle.Small 8-12": Norfolk Terrier, Pekingese, Pomeranian, Toy Poodle.Medium 14-18": Beagle, Dachshund, Jack Russell Terrier, Lhasa-Apso, Pug, Schnauzer, Miniature Scottie. dog summer apparel clothing