It's difficult to tell who was more star-struck when David Beckham met Usain Bolt.

Manchester United fan Bolt shared a picture on social media with the former Red Devil on Monday morning along with the message "no caption needed".

However, Becks seemed equally pleased with his encounter with the quickest man on the planet.

The Old Trafford legend uploaded the same snap to his Instagram account, gushing "Fastest man in the world .. I think that's all I need to say... pleasure to meet the best."

Bolt is a diehard United supporter and took to Twitter on Saturday following the 4-1 win against Leicester.

Goals from Chris Smalling, Juan Mata, Marcus Rashford and Paul Pogba ended a run of defeats for Jose Mournho's men.

And Bolt was clearly impressed with what he saw as he singled out summer signing Pogba for special praise.