Kevin Federline's O.G. baby mama, Shar Jackson, tells Us that Britney's kids haven't really noticed that their mom is not around. Says Shar: "They're babies, you know, they don't really know...Of course, all kids say, 'mama,' but they don't really know [where she is]." • There was a rumored New Kids On The Block reunion, but NKOTB member Danny Wood is saying no way. "There has been no talk of this and you are getting it from source directly. Never say never, and you can't believe everything you read." • The cast for the new live-action G.I. Joe movie continues to be set in place — Channing Tatum was just cast as "Duke." Sienna Miller, Joseph Gordon-Levitt and Rachel Nichols are also part of the ensemble. [Us, DListed, Perez ]

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