Britney Spears Blindsided by Jason Trawick Split: "She's in La-La Land"

USMagazine, Friday, January 18, 2013, 11:00am (PST)

Britney Spears was blindsided by her breakup with Jason Trawick, multiple sources reveal in the Jan. 28 issue of Us Weekly (out now). Though the former X Factor judge, 31, said in a statement Jan. 11 that she and her fiance of one year had "mutually agreed" to end their engagement, sources insist Spears never saw it coming.

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"He had been planning to break up with her for months," one insider says of Trawick, 41.

Adds another, "Everyone knew Jason was leaving her but Britney. She's in la-la land."

For more details on the couple's broken engagement -- and to find out how Spears is coping -- watch this week's Hot Stuff video, as explained by Us Weekly Senior Editor Ian Drew and special guest, Kerli.

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Also in the roundup: Emily Maynard still texts former Bachelorette suitor Sean Lowe; Real Housewives of New Jersey star Teresa Giudice freaks out when sister-in-law Melissa Gorga shows up to her daughter's birthday party; and much more!

This article originally appeared on Usmagazine.com: Britney Spears Blindsided by Jason Trawick Split: "She's in La-La Land"