Football managers have been known to try some off the wall methods to motivate players, but this was more imaginative than usual.
Pop sensation Justin Bieber paid a visit to Chelsea's Stamford Bridge stadium where he starred in a one man-training session as the team's stars looked on.
Blues favourites Fernando Torres and Frank Lampard were left with little to do as Justin showed off with a series of flicks, tricks and keepie-uppies.
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Afterwards, the dream team posed for pictures in the players lounge.
Justin's recent kick about might have fans of the Baby singer a bit confused as to where exactly his sporting loyalties lie.
Earlier this year he took part in an almost identical display – except that time he was kitted out in Barcelona colours.
It's a little princess!