Lady Gaga celebrated her 25th birthday at a restaurant in Los Angeles called La Cita Bar and joined a Mariachi band for a very special performance. 

The band, called Mariachi Sol de Mexico de Jose Hernandez, launched into a reworked version of Gaga's latest single 'Born This Way' and she decided to get up with them and sing along. She also tweeted to her Little Monsters of the morning of her birthday, March 28:

"I woke up to chicken and waffles in bed, pink tulips, + little monster bday videos. I love you! I was #bornthisday but u were #bornthisway."

Watch the full clip here: