Gwen Stefani shares relationship advice: 'You get out what you put in'

No Doubt beauty Gwen Stefani has revealed some very smart relationship advice during a new interview with the Huffington Post.

When asked if she was ever given any words of marital wisdom, the superstar explained: "You get what you put in. I've learned that from my parents, who have been married for almost 49 years -- proof that the more you work at marriage, the more amazing the rewards."

Stefani also shared her favourite family tradition and confessed that she has special memories of Christmas:

"When I was growing up, Santa Claus would cover the living room doorway in wrapping paper so we kids couldn't peek at what was under the tree. Our parents would count to three, and then we'd crash through the paper to get our presents. It's the craziest thing because now Santa does the same thing for my kids. Weird, huh?"

Watch Stefani talk about her family here: