Lady Gaga, the wackiest woman in pop, has enjoyed a triumphant start to the new year with a double success in the charts.
The flamboyant American knocked X Factor winner Joe McElderry from top spot in the singles chart and also gained second place in the album chart.
Her single Bad Romance ended McElderry's brief week-long stint at number one, and her album The Fame moved up two places into second spot behind Scottish singer/songwriter Paolo Nutini's Sunny Side Up.
McElderry moved down to second place in the singles chart with The Climb.
American hip hop/dance act the Black Eyed Peas moved up three places to claim third position with Meet Me Halfway.
There was little movement elsewhere at the top of the singles chart but in the top 20, success story of 2009 Florence And The Machine moved up 18 places from 31st to 13th spot with You've Got The Love.
In the album chart, last week's number one, Michael Buble's Crazy Love, was down three places to number four.
Florence And The Machine and indie rockers Muse were the other high climbers in the top 10.
Muse's album The Resistance was up to 8th spot from 35, and Lungs by Florence Welch's band took the number six spot, up from 26th.