Dearmfriend, before buying, pls pay attention that our size details show clearly as below.

Material:100%polyester fiber
Size details:
US 2y:Length:18.11"(46cm) Bust:25.98"(66cm) Sleeve:13.39"(34cm);
US 3y:Length:19.29"(49cm) Bust:28.35"(72cm) Sleeve:14.57"(37cm);
US 4y:Length:20.08"(51cm) Bust:29.13"(74cm) Sleeve:14.96"(38cm);
US 5y:Length:21.26"(54cm) Bust:29.92"(76cm) Sleeve:16.14"(41cm);
US 6y:Length:22.83"(58cm) Bust:32.28"(82cm) Sleeve:16.54"(42cm);

• 1 or 2 Sizes Up Suggested as ours are Chinese Size
• US 3y:Length:19.29"(49cm) Bust:28.35"(72cm) Sleeve:14.57"(37cm)
• US 4y:Length:20.08"(51cm) Bust:29.13"(74cm) Sleeve:14.96"(38cm)
• US 5y:Length:21.26"(54cm) Bust:29.92"(76cm) Sleeve:16.14"(41cm)
• US 6y:Length:22.83"(58cm) Bust:32.28"(82cm) Sleeve:16.54"(42cm)

1 or 2 Sizes Up Suggested as ours are Chinese Size