Football legend David Beckham’s son Romeo turned 18 on Tuesday, however it seems that the star has a bit of trouble accepting that he is growing up.The husband of former Spice Girl Victoria posted a series of snaps to his Instagram in which he was trying to decipher who was taller, father or son. In the first picture, in which both are topless and David’s impressive body ink is on show, the footballer is looking down at Romeo’s feet as they both giggle and get into position to measure.