Susan Boyle Hold onto your hats, folks.

Susan Boyle's fame may be on the brink of reaching even more tectonic proportions.

Her Britain's Got Talent mentor Piers Morgan says she could be in the running to take the States by storm.

Speaking to People, Piers said Britain's very own hairy angel would be welcome to perform on America's Got Talent, which starts next week, if she feels well enough.

"If she’s up for it and she is well enough," said Piers, "our feeling is she probably will (appear on AGT). Absolutely.

"Susan singing live to 25 million Americans? That would be great," he continued, adding that, "she still gets a bit tired sometimes, but she is 48."

Susan's brother, John Boyle, has previously commented that 95 percent of his sister's fan mail comes from the US - plus she's got the support of Hollywood starlet Demi Moore - so winning over the States may not be too far-fetched a task for the church singer from Scotland.

Su-Bo has suffered from health problems in recent weeks, with a cancelled performance on the BGT live tour and a visit to rehab clinic The Priory just after she came second in the comp.

However, when she has performed, like the other night in Glasgow, she's received rave reviews.

Could she really follow in the footsteps of Leona Lewis, Adele and Amy Winehouse in cracking the US? Watch this space.

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