74-year-old fashion designer Roberto Cavalli,buys 29-year-old playmate girlfriend a private island for £2.5m

Roberto Cavalli, 74, has allegedly bought his 29-year-old Swedish playmate girlfriend a private island in her home country.

Sandra Nilsson is the new owner of the £2.22million Stora Rullingen off the coast of Strängnäs, some 50miles east of Stockholm.

The island comes complete with four-bedroom villa, hunting lodge, pool and the remains of a Viking hill fort as well as its own small golf course.

The former Playmate of the Month - who is 45 years Cavalli's junior - has been gifted the 1.25mile long island by her elderly boyfriend, Swedish media reports.

The couple allegedly visited the island together in December, after being flown in on a private helicopter, and the sale was confirmed as completed last month, Aftonbladet reports.

It appears that Cavalli and Ms Nilsson made quite the deal, as the island was originally put on the market for £5.7million(75million SEK). 

The 81.5 acre island comes with a private four-bedroom villa with both a jacuzzi and a swimming pool built into the mountain. 

The grass lawn outside is big enough to allow propeller planes and helicopters to land, as well as various riding games, football, tennis and golf practice with six tee-off areas.

A smaller hunting lodge with space for ten people has been advertised as the 'perfect space for everything from wine tastings to important meetings'.

It also has a 1.5km long jogging track, a private harbour, it's own ferry with space for ten people, a 300square metre stable with three horse boxes and staff lodgings.

On the north-western part of the island is a historical Viking hillfort - a 100ft high rocky surface which has been dated back to the Stone, Bronze and Iron ages 

Ms Nilsson, sometimes mistakenly referred to as Lina Nilson in international media, has been seen by Cavalli's side since he separated from his wife in 2010.

Despite success as a glamourmodel in the late noughties, Ms Nilsson's modelling career appears to have waned, and it is likely that the island was bought for her by her elderly fashionmogul boyfriend.

Her parents told local Swedish media that she splits her time between New York and Italy where she 'works for Roberto Cavalli'.

'She always dreamed of her own island,' her father Jan-Ove Nilsson told Katrineholms Kuriren.

'She wants something in Sweden to fall back on'.

He added that Sandra is planning on visiting her new island next week and that Cavalli 'and other celebrities' will be in attendance.  

Ms Nilsson, from Sjöbo in southern Sweden, was first discovered by a modelling agent aged 14 during a family holiday in Paris.

Her parents advised her to wait until after high school, but after graduating with the Swedish equivalent to A-Levels in nursing and childcare, she started modelling part time while working as a personal assistant.

She was a competitor on Scandinavia's Top Model, has won a number of beauty competitions, including Swedish Miss Hawaiian Tropic, before becoming Playboy's Playmate of the Month in January 2008.