Los Angeles: Singer Lady Gaga is in celebration mood after Barack Obama was re-elected as the US President.
The 26-year-old expressed her joy on Twitter: "I just got off stage in Columbia! Congratulations Mr. President. We are so proud to be American tonight! Yes! Yes! Yes!"
A website quoted the singer as saying: "We just couldn`t be happier, my goodness, the joy when freedom prevails."
She later posted a picture of her with friends, with everyone flaunting a big smile. Obama has won a second term as the president, defeating Republican rival Mitt Romney. He was elected America`s first African American president in 2008.