Bad hair day? Disheveled pair Ashton Kutcher and Mila Kunis dress down for casual stroll in California

They may be one of Hollywood's most successful young couples, but Ashton Kutcher and Mila Kunis are happy to prove that being a movie star isn't always glamorous.
The pair emerged looking incredibly casual as they strolled through the streets of Sherman Oaks in California, yesterday.   
Walking hand-in-hand through the city, the two actors - who only confirmed rumours of their relationship in March - made their way to a sports bar, where their choice of outfits would surely have been appreciated.

Bad hair day: Celebrity couple Aston Kutcher and Mila Kunis dressed down while out at a sports bar in Sherman Oaks, California

Wearing a purple zip-up hoodie with skinny jeans and trainers, Mila was casually unkempt with bed-head hair and a distinct lack of make-up for the outing.
But the comfortable clothing appeared to do little to make the Black Swan star smile - she remained stoney-faced for much of it.
Meanwhile, Ashton opted to hide under a baseball cap while wearing khaki chinos and a marine green jumper. The only symbol of his global fame was the chunky silver Rolex he sported on his wrist.

Skin deep: The couple are clearly relaxed in each others' company as they wore very casual clothing

Not a good look: Mila looked tired and stoney-faced on the trip - capped with a mane of messy hair

But, following a busy year, perhaps 30-year-old Mila was simply too tired to raise a smile.
She has appeared in two films to date, with a further two expected to be released before Christmas. The second of those, Blood Ties, sees her reunite with James Franco - her co-star in recent release Oz The Great And Powerful.
The actress also lends her voice to animated character Meg in Family Guy, a role she first took on in 1999.

Hair-raising: Mila has enjoyed a busy year - although it seems to have left her very tired

Fortunately, her work ethic remains in place as she's been flirting with the idea of returning to the show which made her famous.
The brunette beauty wants to reunite for a special episode of That ’70s Show with co-stars Wilmer Valderrama (Fez), Laura Prepon (Donna), Danny Masterson (Steven) and Topher Grace (Eric).
Earlier this year, she told E! News: 'I'm more than game for it. I've said it before — I would love to do it…Yeah, I would totally do it. Why not? I loved it. It was eight years and they were eight amazing years of my life.'