I think they are all too close. I particularly find Isabella nn Bella difficult with a sister who has Bell/e/a in her name.
Isabella and Annabelle (Izzy and Anna) for twins I could get behind.
It's very matchy and if you really like that it's fine because at least you'd be giving them nn's that are very distinctly their own.
Personally given the names you chose I'd probably go with Marie Isabel and Annabel Wren. Simplify and switch it up a bit. This way it's more cute matched for twins that matchy-matchy matched.
With a big, feminine name like Isabella I came up with these:
Popular Names (because Isabella is quite popular)
Isabella & Sophia
Isabella & Olivia
Isabella & Charlotte
Isabella & Arianna
Isabella & Aurora
Isabella & Bianca
Isabella & Caterina
Isabella & Elettra
Isabella & Clara
Isabella & Matilda
Isabella & Ebony
Isabella & Lucinda
Isabella & Eleanor
Isabella & Felicity
Hope that helped!
I'm not a big fan of matchy twin names, so I'd aim for a name with similar elegance, history, and style:
Isabella & Alice (Lissy)
Isabella & Cordelia (Cora, Cara, Delia, Lia, Clia)
Isabella & Vivienne (Vivi)
Isabella & Amelia (Amy, Lia, Mellie, Allie)
Isabella & Madeleine/Madelaine (Lena, Laney, Maddie)
Isabella & Violet (Vi, Lettie)
Isabella & Cecelia (Celie, Cece, Lia)
Isabella & Adelina (Lina, Addie, Della)
Isabella & Juliette (Etta, Julie)
Isabella & Lucia or Lucille (Lucy)
Isabella & Philippa (Pippa, Flicka)
@sunshines kid I love Isabella and Aurora,Isabella and Electra
@seazonu86 I love Isabella and Anastasia, Isabella and Francesca and Isabella and juliet
@ellenelle I love Isabella and Alice, Isabella and Juliet and Isabella and Amelia
Thank you all for your suggestions!my favorite is probably Isabella and Anastasia nn Bella and Ana
What do you think?
Also Isabella and Alice are to twilight?