Christina Aguilera has revealed the secrets to a successful marriage - 'naked Sundays' and 'taco nights'.

The 25-year-old, who has been married to Jordan Bratman for nearly a year, told Cosmopolitan magazine: "We have naked Sundays. You just lie in bed all day and chill with each other and do things that husbands and wives do. We love our cosiness."

Away from the bedroom, the 'Beautiful' singer underlined the importance of the couple's kitchen collaboration:

"We have our taco night," she explained. "He cooks the meat and I chop the
tomatoes and the lettuce. It's important to take time for your spouse and
nurture the relationship."