Melinda Gates reportedly rented private island to avoid media

The Bill and Melinda divorce has been a done deal for months, TMZ has learned, and they had a plan to announce it back in March ... a plan that included renting a remote, private island where the entire family -- with one BIG exception -- could avoid the media once the announcement was made ... sources with direct knowledge tell TMZ.

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Our sources say Melinda Gates rented Calivigny Island in Grenada ... yes, she rented the entire island for $132,000 a night. The plan was for Melinda and the kids, as well as their significant others, to come to the island -- everyone except Bill. We're told everyone in the family already knew Bill and Melinda were divorcing. There was a considerable amount of acrimony associated with the split and we're told virtually everyone in the family took Melinda's side. Another way of putting it ... we're told they were very angry at Bill, and that's why he wasn't invited.