Ashlee Simpson and Pete Wentz's son Bronx Mowgli isn't even two years old -- but he's already getting an education in rock 'n roll.

The adorable tot was out with his proud parents this weekend in L.A. -- where he was wearing some kid sized graphic tee's for Motley Crue and the The Sex Pistols.

Could Bronx be a little Fall Out Boy in training?

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