Ashton Kutcher's giant birthday cake

Ashton Kutcher celebrated his 34th birthday on February 7 with a cake on the sets of Two and a Half Men. The huge cake, a surprise from the cast, had a promo image of the actor alongside co-stars Jon Cryer and Angus T. Jones.

Quick to gloat on Twitter, Ashton posted: "I love my coworkers."

Coming Up: Ashton wears his wedding band and a new look.

The Two And A Half Men star was seen attending a press conference shorn off the long hair and beard he has worn till now for the latest season of the comedy serial.

But along with his new look, what really made celebrity watchers sit up is the wedding band that is still on his finger.

A clean-cut Ashton Kutcher said that he opted for the clean look as it was a part of the plot in an episode of Two And A Half Men.

Nothing was obviously said of the wedding band, but that hasn't stopped a slew of speculation on the internet, including some of him trying to win over ex-wife Demi Moore.

Coming up: Ashton has another new girl

A few days ago Ashton Kutcher was spotted flirting with his New Year's Eve co-actor Lea Michele and now the actor, who split from wife Demi Moore in November 2011, spent Christmas in Italy with screenwriter Lorene Scafaria.

According to reports, the pair have been seen visiting numerous sights over the festive period, including the Leaning Tower of Pisa.

The Two and a Half Men star took to Twitter to post a picture of the pair along with his business partner Matt Mazzant, and he wrote: "Roman holiday with homies...have an amazing new year! (sic)"

Coming Up: Ashton flirts with Lea.

Ashton Kutcher made his first red carpet appearance after his split with wife Demi Moore, at the premiere of New Year's Eve. But the Two and a Half Men star was caught flirting with co-actor Lea Michele.

Looked like Ashton couldn't keep his eyes off the Glee star.

Lea Michele split with boyfriend Theo Stockman this September. Seen here in a plunging silver Tulle gown on the red carpet.

Coming Up: Ashton and Demi's years of togetherness

"I will forever cherish the time I spent with Demi. Marriage is one of the most difficult things in the world and unfortunately sometimes they fail. Love and Light, AK." With these words on Twitter, Ashton Kutcher accepted his spilt from wife of six years, Demi Moore.

Earlier, Demi released a statement confirming the split. She hinted at his infidelity, saying she is moving on because "there are certain values and vows that I hold sacred."

Here's a look at an unlikely love story that lasted more than half a decade despite prophecies of doom and an unconventional age gap of her 49 to his 33.

Hollywood's power couple made it official after dating for two years, tying the knot on September 24, 2005 in Beverly Hills. On their wedding day, he was 27 and she was 42.

Never ones to shy away from the camera, Demi and Ashton were often seen at the best events, sometimes lovey-dovey in public.

Their public intimacy carried through to the June 2007 issue of Vanity Fair. Demi and Ashton struck an intimate pose barely a foot away from her ex-husband, Bruce Willis.

This was the third of Demi's unconventional Vanity Fair covers. Another Vanity Fair cover in August 1991 had landed Demi in extreme controversy. She posed nude while seven months pregnant, intending to portray "anti-Hollywood, anti-glitz".

She appeared nude in Vanity Fair once again in 1992, modeling for the world's leading body painting artist, Joanne Gair in Demi's Birthday Suit.

Controversial covers apart, Demi and Ashton certainly mastered the look of endless love, despite the 15 years separating them.

The insanely good-looking star couple is seen here dressed up for their many public appearances.

Ashton Kutcher has been a part of the lives of Demi's three daughters with former husband, actor Bruce Willis. Demi's daughters have reportedly supported Ashton through the tough times.

As a couple, Ashton and Demi have been little more than just "celebrities". Together, they formed the DNA Foundation, which works to end child sex slavery through its "Real Men Don't Buy Girls" campaign. They discussed their foundation during the Clinton Global Initiative last September.

The couple made their final public appearance together during the Stephan Weiss Apple Awards at the Urban Zen Center in New York.

In recent months, Ashton hit the headlines for spending the weekend of his 6th wedding anniversary with Demi with party girl, 20-something Sara Leal. Sordid details of the debauched night are now in the open as Leal sold her story to tabloids.

Demi and Ashton reportedly spent their last few weeks trying to work things out as divorce rumours refused to die down. They went for Kabbalah retreats and camping retreats with Demi asking fans who tried to photograph them to leave her and her family alone.

Apparently, the actress who has been looking alarmingly frail and gaunt in the last few months and even posted a lonely pic on Twitter, is gearing up to fight for their $290m fortune and claim damages for enduring public humiliation because of Ashton's alleged infidelity.

Demi's Twitter handle still remains @mrskutcher and she is following Ashton Kutcher – let's see where that goes.