The charity campaigner accompanied the former hat-maker to the opening of Fernando Botero's new exhibition at Monaco's Marlborough Gallery last week.
The charity campaigner, who is the estranged wife of Beatle's legend Sir Paul McCartney, accompanied the former hat-maker to the opening of Fernando Botero's new exhibition at Monaco's Marlborough Gallery last week.
A source said: "They looked very cosy and he only had eyes for her. He was showing her off and even introduced her to Prince Albert II who was also a guest at the party."
The 39-year-old former model - who lost her left leg below the knee in a motorcycle accident in 1993 - was also overheard telling fellow guests she was a trained musician who played the oboe.
Shilling, 51, is famous for once joking: "I love women to look beautiful and could never let a woman walk out of my shop wearing a hat that I didn't think suited her."
While in Monaco Heather also attended 'The Seven Deadly Sins', a play co-written and produced by her friend Mark Sinden.
Heather's representative, Michele Elyzabeth, is yet to comment on romance rumours.
Heather is currently embroiled in a bitter divorce battle with Paul. The former model is said to have demanded a substantial sum of money from the music legend, with reports ranging from £50 million to £100 million. The couple have a four-year-old daughter Beatrice.
Heather Mills
