When we heard yesterday that Leonardo DiCaprio and Gisele Bundchen had split, there weren't many details to be had. But give the gossipists a few hours and a phone and you can be sure "insiders" (that is, chatty paparazzi) will begin telling all.

It turns out that Sienna Miller – once portrayed as the innocent victim to Jude Law's cheating – had a hand in the break up. The Factory Girl is said to have been one (of many) lass that Leo couldn't keep his hands off of. Depending on which story you believe, Leo and Sienna got together in either New York or L.A.

And to make the situation one big celebrity comedy? Leo was in New Orleans shooting All the King's Men while Jude and nanny Daisy Wright were engaging in their own tryst. It's just too bad Hurricane Katrina had to be right about everything: the blacks and DiCaprio.

Leo and Sienna: It's The Rumor Du Jour [Fox 411]
Earlier: Jossip Juxtaposition