▁the ▁film ▁adapt ations , ▁B ella ▁is ▁port rayed ▁by ▁actress ▁Krist en ▁Stewart . ▁Meyer ▁stated ▁that ▁she ▁was ▁" very ▁excited " ▁to ▁see ▁Stewart ▁play ▁the ▁part ▁and ▁that ▁she ▁was ▁" th ril led ▁to ▁have ▁a ▁B ella ▁who ▁has ▁practice ▁[ in ▁a ▁vast ▁array ▁of ▁film ▁gen res ] ", ▁since , ▁according ▁to ▁Meyer , ▁Tw il ight ▁has ▁moments ▁that ▁fit ▁into ▁many ▁gen res . ▁Stewart ▁we ars ▁contact ▁l enses ▁in ▁the ▁films ▁in ▁order ▁to ▁achieve ▁a ▁ch oc olate ▁brown ▁eye ▁color ▁as ▁described ▁in ▁the ▁books . ▁ ▁Re ception ▁B ella ▁has ▁received ▁a ▁generally ▁negative ▁reception ▁from ▁critics . ▁Publish ers ▁Week ly ▁states ▁that , ▁after ▁her ▁transformation ▁into ▁a ▁v amp ire , ▁" it ' s ▁almost ▁impossible ▁to ▁identify ▁with ▁her " ▁in ▁Bre aking ▁Da wn . ▁Lil ah ▁Lo hr ▁of ▁the ▁Chicago ▁Trib une ▁comp ares ▁B ella ' s ▁character ▁to ▁the ▁story ▁of ▁the ▁Qu ile ute ▁wol ves ▁and ▁describes ▁it ▁as ▁" less ▁satisfying ." ▁During ▁Tw il ight , ▁Kirk us ▁Re views ▁stated ▁that ▁" B ella ' s ▁appeal ▁is ▁based ▁on ▁magic ▁rather ▁than ▁character ", ▁but ▁that ▁her ▁and ▁Edward ' s ▁" port ray al ▁of ▁dangerous ▁lo vers ▁hits ▁the ▁spot ". ▁In ▁the ▁review ▁of ▁New ▁Moon , ▁Kirk us ▁Re views ▁said ▁that ▁B ella ' s ▁person ality ▁was ▁" flat ▁and ▁obs ess ive