Christina Aguilera is here really driving up the level of sweat and heat that we can bear at one time.MORE: Christina Aguilera is a vision in high-cut white bodysuitIn more ways than one, the singer's latest Instagram post has people feeling the rising heat and she's building anticipation for something special to come.WATCH: Christina Aguilera shows off insane living roomChristina posted a series of snapshots on her Instagram in an all-black ensemble from her visit to the Hollywood Bowl.