When Liv got upset with father Steven Tyler for hitting on her friend Cameron Diaz

Veteran musician Steven Tyler has revealed he once upset his daughter Liv by ''hitting on'' her ''best girlfriend'' Cameron Diaz.

The 70-year-old Aerosmith frontman said he was leaving a party thrown by designer Stella McCartney with Liv and Diaz, when he asked the "Mask" actor if he could take her out leaving his daughter unimpressed.

"Yes I have. And I got a lot of s**t for it too," Tyler said during an appearance at "The Late Late Show with James Corden".

''I look at this beautiful woman. I said, 'Cameron, should you ever need someone to take you to the movies or you know, like, if I was to, you know, ask you to show me around London...' And of course, Liv went, 'Daddy, you're hitting on my best girlfriend!' And I got ashamed for a moment," he added.