Jennifer Aniston has collaborated with US water brand SmartWater, taking centre stage as a ditzy mother-of-two who is now expecting triplets.

The action starts with a cameo from American Idol host Ryan Seacrest presenting a mock news report, saying Jennifer Aniston’s home security tapes have been leaked online by an unknown source.

The footage then cuts to black and white video surveillance of Jennifer Aniston, climbing inside of a new car and addressing the saleswoman by the wrong name, calling her Demi instead of Mimi.

She then reverses and crashes the vehicle, before coming back inside the house, shrugging off the incident, and announcing: “I forgot my smartwater.”

Jennifer Aniston heads to the kitchen, where she is seen with her back to the camera removing a Velcro band from her waist, which has been squashing her stomach to disguise the enormous baby bump.

Jennifer Aniston has collaborated with US water brand SmartWater, taking centre stage as a ditzy mother-of-two who is now expecting triplets

As she turns around for the big reveal, she shows off the faux tummy, stroking it as she says: “How are my little triplets doing? You must be so thirsty” – then drinking the product she is promoting.

A home-help voice then comes through the intercom telling Jennifer Aniston her trainers are ready for a workout, before we see four burly men lifting her up and down, without her having to break a sweat.

Jennifer Aniston then heads outside to the pool, where two men are filling it with bottles of smartwater.

Cue her twentysomething son, played by Jimmy Kimmel, wearing a snorkel mask and armbands as he wanders into the outdoor area and asks his mother for a swim.

When she declines, he cries: “You always make me hide, I think you’re ashamed someone will see me,” before she tries to usher him into house alongside his brother, a small person in an alien suit.

At the end of her day, Jennifer Aniston, 43, is seen standing in front of a mirror, saying: “Good night Rachel.”

She is alluding to the famous hairdo that became just as famous as the character itself in the Nineties sitcom, as she yanks off a wig to reveal frizzy unkempt locks.

The product tagline then flashes up: “Even more refreshing than the truth.”

While Jennifer Aniston is yet to have any children in real life, a family could soon be on the cards after she accepted a proposal from Mulholland Drive actor Justin Theroux on his 41st birthday last month.

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