Scruffy Simon Cowell kicks back in slouchy tracksuit bottoms as he jets into LAX with Lauren Silverman and mini-me son Eric

He’s known for teaming white open-wide shirts with black high-waisted trousers.

But as Simon Cowell touched down in Los Angeles on Wednesday, he decided to switch up his trademark style for something far more comfortable.

The 56-year-old cut a low-key figure in grey tracksuit bottoms as he was guided through LAX alongside his girlfriend Lauren Silverman and mini-me son Eric.

Scroll down for video 

Keeping his cool: Simon Cowell cut a low-key figure as he touched down in Los Angeles his girlfriend Lauren Silverman and mini-me son Eric on Wednesday

Keeping his cool: Simon Cowell cut a low-key figure as he touched down in Los Angeles his girlfriend Lauren Silverman and mini-me son Eric on Wednesday

He teamed his casual attire with a plain white T-shirt and black trainers, while concealing his eyes with a pair of stylish aviators.

Sporting a slight hint of stubble, the X Factor boss appeared to be in great and fantastic spirits just moments after his long-haul flight from the UK.

Lauren, 38, dressed her lean and slender frame in a chic denim shirt and tight leather trousers, while strolling through the terminals in white-soled pumps.

See the latest X Factor news, pictures and video updates on judges and contestants 

Chilled vibes: The 56-year-old cut a low-key figure in grey tracksuit bottoms and plain black trainers

Chilled vibes: The 56-year-old cut a low-key figure in grey tracksuit bottoms and plain black trainers

Laid-back: Sporting a slight hint of stubble, the X Factor boss teamed his casual attire with a plain white T-shirt and a stylish pair of aviators

Laid-back: Sporting a slight hint of stubble, the X Factor boss teamed his casual attire with a plain white T-shirt and a stylish pair of aviators

With her raven-coloured tresses swept into a ponytail, the American socialite looked incredible as she allowed her natural beauty to shine with minimal tones of makeup.

Meanwhile, the loved-up couple - who have been together since 2013 - made a glamorous appearance at the Shooting Star Chase Ball at London's Dorchester Hotel on Saturday.

Simon - who has long been a supporter of the charity, which supports children with life-limiting conditions - was dressed in his trademark attire, while Lauren looked gorgeous in a deep berry shade gown.

City chic: Lauren, 38, dressed her lean and slender frame in a casual denim shirt and tight leather trousers, while strolling through the terminals in white-soled pumps

City chic: Lauren, 38, dressed her lean and slender frame in a casual denim shirt and tight leather trousers, while strolling through the terminals in white-soled pumps

Still a beauty: With her raven-coloured tresses swept into a ponytail, the American socialite looked incredible as she allowed her natural beauty to shine with minimal tones of makeup

Still a beauty: With her raven-coloured tresses swept into a ponytail, the American socialite looked incredible as she allowed her natural beauty to shine with minimal tones of makeup

Low-key arrival: The loved-up couple, who have been together since 2013, appeared to be in relaxed spirits following their long-haul flight

Low-key arrival: The loved-up couple, who have been together since 2013, appeared to be in relaxed spirits following their long-haul flight

Their buddle of joy: Little Eric was wrapped up warm under a comfy blanket as his mother pushed him along

Their buddle of joy: Little Eric was wrapped up warm under a comfy blanket as his mother pushed him along

Saturday night's event - which included an auction - raised an impressive £77,000 in funds for the company.

Simon donated an impromptu lot at the auction, too, offering up four VIP meet and greet tickets to the X Factor final this year, while also promising to match the bid as donation.

As well as attending various charity events over the past few days, the TV star has been busy with his hectic autumn schedule, which mainly revolves around the new series of X Factor.

Relaxed: The One Direction manager was seen pulling their suitcases through the terminals, while Lauren took care of their adorable son

Relaxed: The One Direction manager was seen pulling their suitcases through the terminals, while Lauren took care of their adorable son

Jet-setters: The family split their time between London and Los Angeles

Jet-setters: The family split their time between London and Los Angeles

Red-carpet glamour: The couple made a glamorous appearance at the Shooting Star Chase Ball at London's Dorchester Hotel on Saturday with was dressed in his trademark attire, while Lauren looked gorgeous in a deep berry shade gown

Red-carpet glamour: The couple made a glamorous appearance at the Shooting Star Chase Ball at London's Dorchester Hotel on Saturday with was dressed in his trademark attire, while Lauren looked gorgeous in a deep berry shade gown

The comments below have been moderated in advance.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

We are no longer accepting comments on this article.

Who is this week's top commenter? Find out now