Dax Shepard regularly gives wife Kristen Bell ''fashion critiques''.

The 36-year-old actress has revealed her 42-year-old partner - who she has daughters Lincoln, three, and Delta, two, with - often gives his opinion on her ensemble, but she has hinted his knowledge of the current trends isn't great.

Speaking to PEOPLE about the advice she receives, the blonde beauty said: ''He [Dax] gives me fashion critiques when I wear something, but he doesn't get everything.

''I'm not really dressing for him, I'm dressing for myself and other women. So, when I wear a pair of paper bag trousers, which I think are divine, he's like, What grandma did you get this from?! I'm like, you don't get it. You just don't get it.''

The 'Frozen' star - who provided the voice over for the lead role Anna in the Disney animation - has revealed her most preferred wardrobe staple at the moment are hats, which she wears ''whenever possible'', except for the times when she is having a ''great hair day''.

She explained: ''I try to wear hats whenever possible, but it's not always possible because sometimes you're having a great hair day.''

However, Kristen's friends are desperately trying to get her to ditch the accessory for a pair of sunglasses instead.

She said: ''But my girlfriend was like, 'Why don't you just wear sunglasses all the time? Then you'll never squint!' So that's my new trick, I'll be wearing sunglasses indoors from now on. I'm going to turn into Jack Nicholson.''

Meanwhile, the Michigan-born star has revealed she relies on an all-natural deodorant and clothes to avoid putting ''harmful'' products or ingredients on her skin.

She said: ''Researching where the clothes I buy come from and educating myself on dyes and how they can sometimes be harmful and how to support companies that are making the right decisions.

''I was learning about deodorants and I'm just not sure I want the aluminium. So I was trying to figure out a solution because I live in California and you sweat because the sun is brutal. It's like baking soda and coconut oil, a couple of different things, and I love it. It's my new trick.''