The 51-year-old star, along with her manager Guy Oseary, has snapped up shares of New York-based company Vita Coco, which sells the latest trendy beverage across the US, Contactmusic reported.

The ''Material Girl'' singer and Oseary are so taken with the product made from the juice of green coconuts, they have rounded up stars including Matthew McConaughey, Demi Moore and Red Hot Chili Peppers frontman Anthony Kiedis to make smaller investments. The pop diva, who is famed for her strict healthy lifestyle, reportedly made the coconut juice her favourite thirst-quencher while performing her ''Sticky & Sweet'' shows last year and she was keen to get involved with the brand before it hit the mainstream.

"The fact that (the manufacturers) are saying no to everyone who wants them is pretty cool. You want to go to the party that no one else is invited to," Oseary said. PTI