You'd expect a celeb to recognise another celeb given the insular world they inhabit. However, that doesn't hold true for Kate Winslet.

The 38-year-old actress, who has been close friends with Leonardo DiCaprio since they were first propelled into the spotlight after starring in 'Titanic' in 1997, is glad she found fame before the social media revolution with sites such as Facebook, Instagram and Twitter started and as a result doesn't understand why reality TV stars - including Kim Kardashian - are even considered celebrities nowadays.

The 'Labor Day' star says, `I literally stand at this bank of magazines going, 'Who are all these people?' Half the time, I don't even know who they are!" before adding, `Now there's a lot of focus on television stars and soap stars and these real-life Kardashian-type families. But I'm very, very grateful when it was happening to Leo and I. We didn't have any of this cyber-chaos.`

The blonde beauty - who has daughter Mia, 13, with ex-husband Jim Threapleton, son Joe, 10, with ex-husband Sam Mendes, and two-month-old son Bear with husband Ned Rocknroll - also believes that critics are kinder to her now that she is a bit older.