Nicki Minaj was shocked by President Barack Obama's election victory

Nicki Minaj is still in shock over President Barack Obama's election victory.

The president was re-elected by the American public on Tuesday, defeating Republican Mitt Romney, and the Starships singer is thrilled he will be in power for another four years as she never thought it would happen.

She tweeted, "So inspiring, dreams do come true... CONGRATULATIONS MR. PRESIDENT!!!!!!!!!!

"Cried the first time he was elected and this time was just so surreal ... never thought I'd see this in my lifetime. #GodBlessAmerica (sic)"

And Nicki wasn't the only celebrity pleased with the result.

Lady Gaga took to her twitter page to speak of her joy, writing: "I JUST GOT OFF STAGE IN COLUMBIA!! CONGRATULATIONS MR. PRESIDENT @BarackObama We are so proud to be American tonight! YES!!! YES! YES!! (sic)"

Despite being Canadian, Justin Bieber - who now lives in Los Angeles - is very excited Obama is once again in power as it means everyone in the United States will eventually be entitled to healthcare regardless of their income.

He tweeted, alot of emotions right now. congrats President Obama ... Im Canadian. Im good. #FreeHealthcare :) (sic)"

However, Donald Trump was not pleased with the result and thinks it is a disaster for America.

He ranted, "We can't let this happen. We should march on Washington and stop this travesty. Our nation is totally divided! Lets fight like hell and stop this great and disgusting injustice! The world is laughing at us. This election is a total sham and a travesty. We are not a democracy! Our country is now in serious and unprecedented trouble ... like never before."