Lady Gaga sets digital milestone

Lady Gaga has become the first artist to score over 20 million digital singles sales.

The singer's hits 'Just Dance', 'Poker Face' and 'Bad Romance' played a huge part in her sales which were honoured by the RIAA.

'Paparazzi' and 'Love Game' also contributed to her impressive haul.

Rihanna wasn't far behind with 19 million sales followed by Taylor Swift who clocked up 18.5 million.

'Black Eyed Peas' single 'I Gotta Feeling' was also in the running, according to