This Little World romper is a vintage piece, likely from the 1970s or 1980s. The "Little World" label (specifically the script font paired with the lantern graphic) is a known vintage tag. It is often associated with high-quality knit children's clothing from the late 20th century. Modern brands with similar names (like "My Little World") use significantly different, minimalist branding. The small sailboat is a direct embroidery/patch common in the "nautical" or "preppy" baby trends of the 70s and 80s. The romper is of a thick, double-knit polyester or cotton-poly blend. This "Milano knit" style was incredibly popular in the 70s for its durability and ability to hold its shape. The contrasting red and white ribbed trim on the collar and sleeves is also a classic mid-century design element. No size tag visible but according to measurements it is for a baby 6m-12m. Included measuring tape photos for reference of the romper laying flat.