Kate Winslet tells her daughter Mia Honey Threapleton she's ''lucky'' to be curvy.

The 39-year-old actress - who also has two sons Joe Alfie Winslet Mendes, 11, with her second husband Sam Mendes and 19-months-old Bear Blaze Winslet with her third husband Ned Rocknroll - has confessed she constantly makes sure her 14-year-old daughter, from her first marriage to Jim Threapleton, appreciates her ''shape'', and champions her curves.

Kate said: ''I stand in front of the mirror and say to Mia, 'We are so lucky we have a shape. We're so lucky we're curvy. We're so lucky we've got good bums.' And she'll say, 'Mommy, I know, thank God.'''

The 'Titanic' actress went on to reveal the reason she makes sure Mia is comfortable with her body, is because she ''never heard positive reinforcement about body image'' when she was growing up.

In a clip from her upcoming July 27 episode of 'Running Wild With Bear Grylls', Kate said: ''When I grew up, I never heard positive reinforcement about body image from any female in my life. I only heard negatives.

''That's very damaging, because then you're programmed as a young woman to immediately scrutinize yourself and how you look.''