The CHICAGO star wed Chesney only four months ago (MAY05) in a secret beach ceremony in the Caribbean, but this week (begs12SEP05) she began proceedings to have their union annulled.
And it is believed Zellweger's determination to maintain her independence, and not conform to Chesney's housewife ideals that forced her to up and leave.
A source tells British newspaper the Daily Express, "Kenny wants to be involved in every aspect of Renee's life, but she's an independent woman who's not used to being told what to do.
She has forged an incredibly successful career - she's not a washing-up, cooking and kitchen kind of girl. But Kenny was very controlling and wanted her to play the little wife. In the end Renee wanted out."