The gorgeous singer had a quick costume change after her performance before hitting the stage to pick up her prize.

Knowles announced: “Wow! You know what I just want to dedicate this award to my fans - I love you so much. MTV - thank you for all that you did.”

She beat Lady GaGa’s Poker Face and David Guetta and Kelly Rowland’s When Love Takes Over to the prize.

Just before the Best Song announcement B’s husband Jay-Z hit the Berlin arena to perform Empire State Of Mind.

In 2009 Knowles released her third solo album I Am… Sasha Fierce which included hits Single Ladies, Halo and If I Were A Boy.

She also toured the world with her I Am… shows and plays the UK again later this month.

In January Knowles sang the song At Last as President Barack Obama and his wife Michelle had their first dance at the Inauguration Ball.