Pictured: Mary-Kate Olsen, 25, on cosy basketball date with Nicolas Sarkozy's brother Olivier, 42

Pictures have emerged of Mary-Kate Olsen and her surprise boyfriend, former French president Nicolas Sarkozy's younger half brother, Olivier.
The child star-turned-fashion designer, 25, and 42-year-old asset manager were photographed cosying up court-side at Madison Square Gardens on April 25.
The Frenchman, dressed in a lavender shirt and pink jumper, was caught stroking the young star's hair as they watched the New York Knicks defeat the Los Angeles Clippers 99-93.

Surprise romance: Pictures have emerged of Mary Kate Olsen and Nicolas Sarkozy's half brother Olivier at a New York Knicks game at Madison Square Garden on April 25

 
The affection snaps confirm rumours of a romance between the pair, who are said to have been dating for several months.  
The pair are 'head over heels' for one another and spent Memorial Day weekend together in the Hamptons, the New York Post reported.

Olivier, the managing director for Washington, D.C.-based asset managing firm the Carlyle Group, has previously been married.
After he and his wife Charlotte, who have two children together, he dated actress Stella Schnabel for a year before their split in March.

Mind the gap: The 25-year-old has been quietly dating the 42-year-old for several months, according to sources

Fans: The couple watched the New York Knicks defeat the Los Angeles Clippers 99-93

 The asset manager further stirs up the eclectic mix of Mary-Kate's boyfriends, who have included artists, actors and shipping heirs.
Mary Kate - who last night attended a charity event in New York with her twin sister Ashley - dated New York artist Nate Lowman for two years before their split in 2010.
She has also hinted at how breaking up with her one-time boyfriend, Greek shipping heir Stavros Niarchos led to her drop out of NYU in 2005.

Sibling revelry: Ashley and Mary Kate Olsen attended a charity event at Chelsea Piers in New York City last night

She has also been linked to shoe designer Seth Campbell and the late actor Heath Ledger before his death in 2008.
News of her blossoming love life comes as business also appears to be doing well. Along with twin sister Ashley, Mary-Kate was recently listed in a list of the fashion's top 30 names under 30.
The former child stars, who shot to fame on Full House, made the list thanks to their multimillion dollar clothing empire.

Exes: Sarkozy broke up with actress Stella Schnabel, pictured left, in March, and right with his former wife Charlotte, with whom he has two children

Quite a change: Mary-Kate dated New York artist Nate Lowman for two years until 2010

They have worked on a string of fashion labels, and last July debuted their high-end handbag line for The Row at Barneys.
The line includes a croc backpack retailing at a lavish $39,000. They have also been spotted out toting mini handbags, sold at $3,200 apiece.
As well as The Row, which has been worn by Michelle Obama, the women are behind mid-priced labels Elizabeth & James and teen line Olsenboye.
They also created website StyleMint, which recently collaborated with Rachel Bilson.

Big brother: Olivier is the younger half-brother of former French president Nicolas Sarkozy, pictured with his wife Carla Bruni