VIDEO: Julie Andrews Talks Gaga's Oscar Performance & More on WATCH WHAT HAPPENS LIVE!

On last night's WATCH WHAT HAPPENS LIVE! on Bravo, legendary actress Julie Andrews told host Andy Cohen what she thought about Lady Gaga's "Sound of Music" live performance at this year's Oscars. Says the actress, "I was standing in the wing and I had no idea she had that range and I was saying "Go girl go!"

Later, Andrews tells a WWHL caller what her biggest pet peeve is about actors when she is in the director's chair and it has to do with music. Check out the clips below and click here for more clips from last night's appearance!

Andrews made her Broadway debut in 1954 with The Boy Friend, and rose to prominence starring in other musicals such as My Fair Lady and Camelot, and in musical films such as MARY POPPINS (1964), for which she won the Academy Award for Best Actress, and The Sound of Music (1965). She has starred in films such as The Princess Diaries (2001), its sequel The Princess Diaries 2: Royal Engagement (2004), the Shrek animated films (2004-2010), and Despicable Me (2010).

Photo by: Peter Kramer/Bravo