Watch Lady Gaga and Stevie Wonder Sing “Happy Birthday” to Elton John

Watch Lady Gaga and Stevie Wonder Sing “Happy Birthday” to Elton John
Getty Images Lady Gaga and Elton John in 2016

Elton John rang in his 70th birthday with a little help from his friends.

At a Los Angeles gala Saturday celebrating John’s big day — as well as 50 years of writing with Bernie Taupin — stars including Lady Gaga, Stevie…