Ranbir, Rishi shoot for their first ad

Sources from the sets reveal that both were comfortable during the shoot as they had to play father-and-son in the commercial too which will go on air on September 15. Wake Up Sid director Ayan Mukherjee has also directed a teaser that goes on air Monday.

Coming Up: Other hot celeb ads.

Superstar couple Shah Rukh and Gauri Khan pose in this new image for their new D'Decor Home Fabrics advertisements.

Though both look fashionable, Gauri steals the show with her curvaceous figure and chic avatar. Shah Rukh, looking as prim as ever, sports a casual look to contrast with his wife's more formal, debonair wardrobe.

While father Arnold is gearing up for his return to the silver screen, his eldest son Patrick Schwarzenegger (17) is ensuring a heat wave, with this shirtless ad for Hudson jeans.

Just a few months into his parents separation, if this Patrick's way of getting some attention, he's absolutely right!

Latin beauty Jennifer Lopez's adorable twins, Max and Emme have made their modelling debut with Gucci. In the shot the two-and-a-half-year olds are seen playing next to their super-hot mommy on the beach dressed in Gucci's finest threads.( Photo Credit: Gucci)

As the sultry fashionista pulls off her most camera friendly look, her two kids just look plain happy to be out on the beach on a sunny day. ( Photo Credit: Gucci)

Hollywood actress Megan Fox and Portuguese soccer star Cristianio Ronaldo are flaunting their flawless bodies in a bold new Emporio Armani campaign. In an video entitled The Tip, newlywed Fox answers the door to her hotel room wearing nothing but lacy lingerie. She then instructs an unsuspecting room service attendant to "put it over by the window." Armani offered sneak peek of the ad spots with new mini clips that are as hot as Fox and Ronaldo's previous ad campaigns for the brand.

Former Spice Girl Victoria Beckham and her footballer husband, David, are seen kissing and grabbing each other in a lift for a new advertisement of their to-be-launched perfume Intimately Beckham Yours.

The package has been designed to capture the essence of David and Victoria Beckham's passion and the power of their relationship.

The couple, married since 1999, is seen in a lift for the advertisement.

David looks shocked as he wipes red lipstick off his lips as Victoria stares coyly into the camera while wearing a revealing black jacket.

Viewers are then shown shots of the pair kissing and grabbing each other, till it shows David missing his bow-tie, and his hair all ruffled.

Intimately Beckham Yours is the fifth fragrance release by the couple, following the success of previous perfumes, including signature fragrance and Intimately Night- For Her and For Him.

The couple have made a fortune by featuring in advertisements together, including campaigns for Emporio Armani underwear and their fragrances "Intimately Beckham

Actress Zoe Saldana has put the small screen on fire with her new commercial for Calvin Klein's underwear line 'Envy'. In three unique mini-films shot by Mikael Jansson, the Avatar actress features in various poses in her underwear making "confessions" about little known details about herself. "I like when you are able to assist your body to look amazing as opposed to replacing anything. That's exactly what Calvin Klein Underwear Envy does. It helps you, it assists you, but it will not overshadow what you can bring naturally," Saldana said in a statement.

Hollywood beauty Megan Fox has stripped down to her designer underwear to promote fashion giant Emporio Armani's lingerie line.

The Transformers star who has been voted the 'Sexiest Woman Alive' twice, was photographed by none other than Giorgio Armani himself for the racy pictures, reported Sun online.

The snaps of the 23-year-old brunette have been splashed across billboards in the world's biggest cities.

"Megan is young and sexy and has a lot of spirit. Emporio Armani Underwear and Armani Jeans are all about a youthful attitude making her the perfect choice for the collections," said Armani about his new model.

The line was earlier promoted by British 'it' couple David and Victoria Beckham who had grabbed headlines when they posed together in their underwear.

Meanwhile, here's a look at other sexy celebs too who have sold everything from bikes to soaps, and everything in between.