Her last episode aired in the United Kingdom in April previous year, just a month before her Windsor Castle wedding to Prince Harry, the Duke of Sussex.
Meghan Markle could return to her role in Suits as Rachel Zane for one last episode as NBC are reportedly discussing a multi-million pound charity donation.
British tabloids also cited an unnamed Suits actor who said: "This is all supposed to be hush, hush but it's a bit of an open secret that they'd do anything to get her and Patrick back as guest stars".
Watch Susan Boyle's Triumphant America's Got Talent Return
Susan first appeared on Britain's Got Talent back in 2009 and surprised the audience with her rendition of I Dreamed A Dream . Her hit albums have topped the charts in the United Kingdom and sold more than 20 million copies around the world.
Although details regarding Markle's return to the series previously seemed like a longshot given her new royal status, the source claimed that there are already a number of storylines being tossed around in preparation of the Duchess of Sussex accepting the offer.
Meghan has apparently limited her husband's alcohol and caffeine intake in favour of mineral water as the couple prepare to welcome their first child in spring.
The duchess left the show to focus on charity projects and become a fully integrated member of the royal family, who are required to keep their social lives private and are generally not permitted to have social media accounts.
Markle's appearance could potentially fit into the story nicely, with her being happily pregnant, and enjoying her new life living in the UK. "I've heard sums ranging from two to six million being kicked around, and that sounds a lot - but it would be one of the biggest marketing coups in TV history".
An NBC source added, "We could be done in half a day or less. I have ticked this box and I feel really proud of the work I've done there and now it's time to, ' as you [Harry] said, 'work as a team with you, '" she said.