The new palace announcement comes weeks after the announcement of the engagement of Prince William, third in line of succession to the British throne to Kate Middleton.
Twenty-nine year-old Zara Phillips, is the daughter of Princess Annie and her former husband Capt. Mark Phillips.
The palace said Phillips who is 12th in line to the throne had accepted a proposal from Rugby player Tindall. The princess has a successful career as an equestrian.
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