Riley Keough at the Milan show. (AFP)

Milan, Feb. 26 (Reuters): When Elvis Presley sang about a “long-legged girl with a short dress on”, he probably wasn’t thinking that his granddaughter would one day fit the bill.

But on Wednesday, Riley Keough zipped into a tiny denim miniskirt and strutted around Dolce & Gabbana’s catwalk on her modelling debut.

“I was really nervous before, I was shaking,” the 14-year-old said shyly after the show.

“But it was fun. I’m looking forward to the next one.”

Asked if performing was in her blood, Keough simply smiled at the floor, her 5 ft 5 inches frame looking tiny as a couple of towering models strode past.

Designers Domenico Dolce and Stefano Gabbana, whose jeans sometimes sport as many rhinestones as one of Elvis’ jumpsuits, met Keough at a fashion awards ceremony where her mother, Lisa Marie Presley, presented them with a prize.

“We were immediately struck by her beauty and fresh, pure spirit.... With her mother’s beauty and her grandfather’s attitude she is sure to be a star,” the designers said.

Keough takes back to the catwalk on Saturday for the top line Dolce & Gabbana show but in the meantime doesn’t plan to shake, rattle and roll with Milan’s fashion posse.

Instead she is keeping firmly out of the public eye and doing what any smart teenager does in Milan — shopping with Dad and his credit card.