Ryan Reynolds has ruffled some feathers with his comment about Blake Lively's "working class" background.Jamie McCarthy/Getty ImagesRyan Reynolds is facing backlash for saying that Blake Lively had a working-class background.Lively's parents worked in the entertainment industry, and her four siblings are actors, too.Being relatable can help a celebrity's appeal, but an inauthentic approach can quickly backfire, a PR expert said.Ryan Reynolds has come under fire for saying that he and his wife, Blake Lively, grew up with working-class backgrounds.In an interview with The Hollywood Reporter published last week, the "Deadpool" star spoke about his and Lively's decision to keep their four kids out of the spotlight "to give them as normal a life as possible.""I try not to impose upon them the difference in their childhood to my childhood or my wife's childhood," Reynolds told The Hollywood Reporter."We both grew up very working class, and I remember when they were very young, I used to say or think, like, 'Oh God, I would never have had a gift like this when I was a kid,' or, 'I never would've had this luxury of getting takeout,' or whatever.