Despite being known for her glamorous style, Kim Kardashian - who gave birth to her first child last month - admits her rapper boyfriend Kanye West favours a more natural look.
Meanwhile, her sister Khloe, 29, admitted her husband Lamar Odom is a fan of a sexy red lip.
She joked, "[He likes] lipstick, but he doesn't like to wear it second hand!"
Kim also shared her tips for faking razor-sharp cheek bones, revealing it's all down to crafty contouring.
She said, "It's all about light and shadow; highlight your brow bones with a luminiser and very lightly enhance cheekbones with non-glittery bronzer."
The Kardashian sisters - who have launched a new cosmetics line, Kardashian Beauty - haven't always looked so stylish and claim to have had their fair share of beauty disasters in the past.
Asked about their worst ever make-up moment, Kim confessed, "Matching eye shadow to my hair accessories and clothes..."Kourtney, 34, revealed, "Too much make-up - pick a strong eye or a strong lip, not both!"