Michael Clarke and his new girlfriend Arabella Sherbourne have gone Instagram official with their romance.

News of the cricketer's blossoming romance with real estate guru Arabella, 32, emerged last month when it was claimed they had jetted off to the Gold Coast together.

They then officially confirmed their relationship when they stepped out holding hands at celebrity hotspot Mimi's in Sydney just a few weeks later.

The couple have kept their romance relatively under wraps by not posting photos of one another on Instagram and only exchanging a few flirty comments on the platform.

But now, Michael, 43, and Arabella have finally gone Instagram official as the leasing executive shared a photograph of the sportsman to her Stories on Wednesday.

Arabella, who is 11 years Michael's junior, posted a black-and-white picture of her boyfriend's NASA T-shirt.

While she cropped his face out of the photograph, she tagged him in the post as she penned in a caption: 'To space @michaelclarkeofficial.'

In another big step in their budding romance, Arabella has also jetted off to Sri Lanka to join Michael on his latest cricket trip.

Arabella, who works for Scentre Group in Sydney, shared a photograph of herself enjoying a hot drink at an eatery in Sri Lanka's capital, Colombo, on Tuesday.

She looked effortlessly stylish in a black vest top in the photograph, which was seemingly taken by Michael, who sat across the table from her.

Michael has been in Sri Lanka for the past few weeks commentating on the Lanka Premier League alongside fellow TV presenter Erin Holland.

He has been making some time for sightseeing on the trip, and now Arabella has jetted over to join him as they have made it into a romantic holiday.

Michael made headlines when speculation began swirling about his romance with the glamorous real estate guru.

Last month, the former Australia cricket captain all but confirmed his romance with Arabella when he left a flirty comment on her Instagram post.

Arabella had shared a string of solo snaps of herself from the Gold Coast, where she was believed to have jetted off to with Michael.

'That smile,' Michael gushed in the comments, while Arabella simply replied with winking face emojis, hinting at their budding romance. 

Just days later, Arabella was spotted arriving at Michael's Sydney $13million mansion looking ready for a weekend stay as she walked in laden down with clothes. 

The couple then officially went public with their relationship when they were seen holding hands while arriving at celebrity hotspot Mimi's late last month.

They have only gone from strength-to-strength, with an insider claiming things are already getting serious between the pair and that wedding bells could soon be on the horizon.

'She has had a few boyfriends but is really ready to settle down. Her and Michael are a good match, very cute together. Maybe she will be the next Mrs Clarke,' they claimed.

News of their new romance emerged 18 months after Michael's very public split with his ex-girlfriend Jade Yarbrough.

Michael and Jade had a very public bust-up in January 2023 in a Noosa park when she accused the former cricketer of sleeping with his ex-girlfriend Pip Edwards. 

In the video, which was filmed by an onlooker, Jade accused the ex-Test captain of cheating on her with his former flame Pip in December 2022.

The dramatic footage showed a shirtless Michael being screamed at and slapped by his girlfriend while out for dinner at a beachside restaurant in Noosa. A remorseful Michael later took full responsibility for what happened.

'I'm absolutely gutted I've put people I hold in the highest regard in this position. My actions in the lead-up to this altercation were nothing short of shameful and regrettable,' he told The Daily Telegraph.

'I am shattered that because of my actions I've drawn women of class and integrity, and my mates, into this situation.'

Despite the bust-up, the exes 'remain on amicable terms,' a representative told Daily Mail Australia at the time.

Michael was previously married to Kyly Clarke and they share a daughter Kelsey Lee, eight. Michael and Kyly went their separate ways in 2019 after seven years of marriage. (Courtesy Daily Mail)