She's worth singing about! Jessica Biel shows just why she inspired Justin Timberlake to write his new single Mirrors

By Chelsea White

PUBLISHED: 20:18 EST, 21 March 2013 | UPDATED: 22:29 EST, 21 March 2013

Even just walking along the street she looks like she's stepped right off the pages of a glossy magazine.

And Justin Timberlake obviously thinks so, after revealing Jessica Biel partly inspired his new song Mirrors.

The actress looked sensational as she strutted along the street in Santa Monica on Wednesday.

Worth singing about! Even just walking down a Santa Monica street on Thursday Jessica Biel looks fantastic

In her bright red shades, skinny jeans, heels and jacket, Jessica looked the image of a Hollywood star.

In a new interview her husband Justin hinted that Mirrors is inspired by the great but not always easy loves in his life - his wife Jessica Biel and his grandparents.

In the recently released video for the song the singer dedicated it to his grandparents William and Sadie Bomer, whose marriage spanned more than six decades.

The artist's muse: Newlywed Jessica inspired her husband to write his new song Mirrors

But, the artist has revealed it is also about his new love or at least 'someone that you feel is your other half'.

The singer turned actor turned back to singer, released an audio clip on his official website on Thursday saying the song is very special to him.

'It's definitely a special song for me,' the 32-year-old said.

His muse: Justin Timberlake has suggested his new single is about his wife Jessica Biel, pictured here last week enjoying a date night

'Mirrors is a love song to someone that you feel like is, you know, sort of your other half. And it became a play on that. Not specifically about looking into a mirror.

'One of the most valuable things in a relationship is being able to constantly change and be individual, but look to the other side to the person that you're with and know that they're changing as well individually, but somehow you two can mirror each other and be the other half of that world that you both create.'

Not just looking at himself: The singer said the song is about how a person becomes an extension of yourself, 'someone that you feel is your other half'

For his other loves: The film clip is dedicated to the love his grandparents, Sadie and William, who died late last year, Bomer shared

The clip examines highs and lows of relationships and at one point is sung from the point of view of a lover fighting to save a rocky relationship, so it seems it may be a case of art imitating life.

Music love: After a break from music Justin is back and on Monday he preformed ahead on the release of his new album The 20/20 Experience

Now married for six months, the pop star did split with wife Jessica, 31, briefly in March 2011, before reuniting and marrying in October 2012.

Tellingly Justin said on Thursday: 'I think a relationship, when it's working, is constantly evolving because we as individuals evolve.

'You want to know that the person you're with is evolving with you.

'People change like seasons. We're always growing, always evolving, and to know that the other half of a special part of your life is, like I said, mirroring you, but also being an individual in their own way.'

The singer takes inspiration from his grandparents who clearly, in his mind, had the greatest relationship but still struggled with their ups and downs.

Together for 63 years before William died late last year, his grandparents are obviously also the inspiration for Justin's own hopes for the future with Jessica.

While his grandparents, the fiction couple in the clip and Jessica and Justin have their struggles, the singer suggests he wants his love to last forever when in the clip he catches his fictional grandmother's ring.

Memories: In the film emotional characters portraying Justin's grandparents deal with different times in their lives including death

While he returns to his music roots, the singer-turned actor is also said to be in the running for the role of Daddy Warbux in the upcoming remake of Annie.