Hmm... so you are never too young to be a football fan and wear jerseys to show the world who you are?! Official England FA Outfit Set meant for kids between 1 and 3 years of age surely points in that direction.

It is the exact replica of the Official England FA jersey. The same smart plain white, contrasted by the bright red trimming. Teemed with the black shorts, your li'l football heartthrob is going to look all ready to take on the fields. Even the England Football Association motif and crest are proudly in place.
As a special consideration for the convenience of kids, the jersey has ribbed and adjustable waist. The 64% cotton, 36% polyester and the 72% cotton, 28% polyester of the ribbing makes the set comfortable against delicate baby skin.
The set is priced between £10.00 and £12.00, depending on the size.
Source: Marks and Spencer