FIFA have reportedly launched an investigation after Neymar wore non-sponsored underpants during Brazil's World Cup fixture against Cameroon.

The Barcelona star's underwear could be seen when he took off his shirt after the hosts' 4-1 win on Monday, when he scored twice.

According to Bleacher Report, the 22-year-old is under investigation by the world governing body for wearing underpants not manufactured by a sponsor.

In 2012, Denmark international Nicklas Bendtner was fined £80,000 for exposing his underpants with a sponsor at the European Championships.