ouble d ▁Princess ▁is ▁one ▁of ▁the ▁books ▁about ▁D iana , ▁Princess ▁of ▁Wales ▁that ▁was ▁written ▁by ▁best - s elling ▁author ▁S ally ▁Bed ell ▁Smith . ▁It ▁was ▁published ▁by ▁the ▁Times ▁Books ▁in ▁ 1 9 9 9 . ▁The ▁book ▁is ▁the ▁first ▁author itative ▁bi ography ▁of ▁the ▁Princess . ▁ ▁Content ▁The ▁ 3 2 0 - page ▁book ▁focus es ▁on ▁trouble d ▁life ▁of ▁Princess ▁D iana . ▁Smith ▁interview ed ▁nearly ▁ 1 5 0 ▁people ▁whose ▁reports ▁are ▁used ▁in ▁the ▁book ▁to ▁narr ate ▁the ▁life ▁of ▁the ▁Princess . ▁These ▁people ▁were ▁mainly ▁D iana ' s ▁int im ates , ▁including ▁British ▁tab lo id ▁journal ists . ▁ ▁The ▁most ▁significant ▁claim ▁made ▁in ▁the ▁book ▁is ▁that ▁the ▁Princess ▁had ▁suffered ▁from ▁border line ▁person ality ▁dis order . ▁It ▁is ▁also ▁claimed ▁that ▁she ▁could ▁not ▁fix ▁her ▁serious ▁e ating ▁dis order ▁and ▁was ▁not ▁able ▁to ▁manage ▁to ▁sust ain ▁relationships . ▁ ▁Sales ▁The ▁book ▁was ▁included ▁in ▁the ▁best ▁s eller ▁lists ▁of ▁the ▁following : ▁The ▁New ▁York ▁Times ▁Book ▁Review , ▁Washington ▁Post , ▁Wall ▁Street ▁Journal , ▁USA ▁Today ▁Top ▁ 5 0 , ▁Boston ▁Glo be , ▁Los ▁Angeles ▁Times , ▁News day , ▁Bar nes ▁& ▁No ble ▁and ▁Publish ers ▁Week ly . ▁ ▁Re ception ▁L inda ▁Rich ards ▁of ▁the ▁January ▁magazine ▁stated ▁that ▁the ▁book ▁provides ▁an ▁un bi ased ▁portrait ▁of