There is nothing wrong in (wearing) clothes having pictures on them for both children and adults as long as these pictures are not revered or glorified and do not display nudity or lewdness. Parents should try to choose pictures that don’t give un-Islamic messages. Try to select pictures of good themes and ideas. It goes without saying that this applies to pictures on clothes and beddings.
In this regard, the eminent Muslim scholar, Sheikh Yusuf Al-Qaradawi, states: “Photographic pictures and those printed on clothes are originally permissible as long as the picture does not contain anything haram (unlawful), and does not aim at glorifying its subject under religious or worldly considerations. The ruling here is more stricter if clothes bear pictures of persons known for their disbelief or deviate character.”