15 Months Ago, AceShowbiz says (in New Sister for Stella in 'How I Met Your Mother')  - Sep 19, 2008
The producers of the sitcom are doing a re-casting by replacing Sara Paxton with an older actress, Danneel Harris, as Stella's sister, Nora. ...

And Becca from The Fan Sites Network says (in Danneel Harris to Guest on How I Met Your Mother) Former One Tree Hill bad girl Danneel Harris (the one on the left) has replaced ex-Summerland beauty Sara Paxton (the one on the right) as Stella’s sib Nora, sources confirm to me exclusively. Although showrunners Craig Thomas and ...

And onetreehill @ livejournal.com from One Tree Hill Community says (in Danneel Harris to guest on How I Met Your Mother) Former One Tree Hill bad girl Danneel Harris (the one on the left) has replaced ex-Summerland beauty Sara Paxton (the one on the right) as Stella's sib Nora, sources confirm to me exclusively. Although showrunners Craig Thomas and ...

And KREN CW 27 TV says (in Mother Gives Stella a Sister... and an Impromptu Wedding?)  NV -
Sources tell TVGuide.com exclusively that Sara Paxton (Summerland) has been cast on the CBS sitcom as Nora, Stella's sister. Stella's bride-to-be sister. ...