I really love long feminine names that can be shortened for a still cute nickname!
Here is my current list of favourites.
[name_m]Feel[/name_m] free to add your own 
[name_f]Ophelia[/name_f] nn [name_f]Lia[/name_f]
[name_f]Bianca[/name_f] nn [name_f]Ani[/name_f]
[name_f]Persephone[/name_f] nn [name_u]Percy[/name_u]
[name_f]Octavia[/name_f] nn Vee
[name_u]Juniper[/name_u] nn [name_f]Juni[/name_f]
Maybe you would like…
[name_f]Alexandra[/name_f] or [name_f]Alexandria[/name_f] nn [name_u]Ali[/name_u] or [name_u]Lex[/name_u]
[name_f]Victoria[/name_f] nn [name_f]Via[/name_f] or [name_f]Tori[/name_f]
[name_f]Antonina[/name_f] nn [name_u]Toni[/name_u] or [name_f]Nina[/name_f]
[name_f]Catherine[/name_f] nn [name_f]Cat[/name_f]
[name_f]Leocadia[/name_f] nn [name_f]Lea[/name_f]
[name_f]Elizabeth[/name_f] nn [name_f]Liz[/name_f] or [name_f]Beth[/name_f]
[name_f]Gwendolyn[/name_f] nn [name_f]Gwen[/name_f]
elizabeth - izzy/betty
alexandra - alex/lexie
scarlett - sal
catherine - cate
dorothea - duffy/thea
eleanor - el/elle/nora
josephine - jo
persephone - percy/effie
i forgot to add lorelai - ro/rory
[name_f]Olivia[/name_f] nn [name_f]Via[/name_f]
[name_f]Evangeline[/name_f] nn [name_f]Evie[/name_f] or [name_u]Angel[/name_u]
Justina/Valentina nn [name_f]Tina[/name_f]
[name_m]Hi[/name_m] there.
I like these too! Some of my favorites are…
Amelia/Mia
Clementine/Cleo
Elizabeth/Tess
Eloisa/Ella/Lula/Lulu
Josephine/Posy
Olivia/Livy
[name_f]Hope[/name_f] this helps.
[name_f]Cressida[/name_f] “Cress”
[name_f]Cassiopeia[/name_f] “Cassie”
[name_f]Eliora[/name_f] “Elle”
[name_f]Seraphina[/name_f] “Sephy”
[name_f]Viviana[/name_f] “Vivi”
[name_f]Alastriona[/name_f] ‘Allie’
[name_f]Lilianna[/name_f] ‘Lily’
[name_f]Emiliana[/name_f] ‘Emmy’
[name_f]Luciana[/name_f] ‘Lucy’
[name_f]Caledonia[/name_f], [name_f]Calliope[/name_f], [name_f]Callidora[/name_f] ‘Callie’
[name_f]Cassiopeia[/name_f] ‘Cassie’
[name_f]Carina[/name_f] ‘Cara’
[name_f]Juliana[/name_f] ‘Jules’
[name_f]Jemima[/name_f] ‘Jem’
[name_f]Fiammetta[/name_f] ‘Fia, [name_f]Fifi[/name_f], [name_f]Etta[/name_f], Etty’
[name_f]Arietta[/name_f] / [name_f]Arrietty[/name_f] ‘Etty’
Any [name_f]Mari[/name_f]- name
Any [name_f]Belle[/name_f] name
[name_f]Genevieve[/name_f] nn Eve/Evie
[name_f]Anastasia[/name_f] nn [name_f]Ana[/name_f]
[name_f]Aurora[/name_f] nn [name_u]Rory[/name_u]
[name_f]Magdalena[/name_f] nn Lena/Maggie
Soliana nn [name_u]Sol[/name_u]
[name_f]Charisma[/name_f] nn [name_f]Carys[/name_f]
[name_f]Natalia[/name_f] nn [name_u]Tal[/name_u]
[name_f]Magnolia[/name_f] nn [name_f]Nola[/name_f]
[name_f]Wilhelmina[/name_f] nn [name_f]Mina[/name_f]
[name_f]Seraphina[/name_f] - [name_f]Nina[/name_f]
[name_f]Rosemary[/name_f] - Romy/Rory
[name_f]Penelope[/name_f] - Poppy/Pepper/Nell
[name_f]Rosalind[/name_f] or [name_f]Lucinda[/name_f] - [name_f]Indi[/name_f]
[name_f]Jessamine[/name_f] - [name_f]Mina[/name_f]
[name_f]Juliet[/name_f] - Jet/Etta
[name_f]Tallulah[/name_f] - Tali/Lula
[name_f]Camellia[/name_f] - Mel/Milly
[name_f]Primrose[/name_f] - [name_f]Posy[/name_f]
[name_f]Raffaela[/name_f] “Raff” or “Fae”
[name_f]Cecilia[/name_f] “Cellie”
[name_f]Arianwen[/name_f] “Ari” or “Anya”
[name_f]Eulalia[/name_f] “Yuli” or “Lala”
[name_f]Minerva[/name_f] “Minnie” or “Vera”
[name_f]Clementine[/name_f] - [name_u]Clem[/name_u], [name_f]Tiny[/name_f]
[name_f]Eleanor[/name_f] - [name_f]Nell[/name_f], [name_f]Leni[/name_f]
[name_f]Antigone[/name_f] - [name_m]Tig[/name_m], [name_f]Tiggy[/name_f]
[name_f]Beatrix[/name_f] - [name_f]Bea[/name_f], [name_m]Bix[/name_m], [name_f]Trixie[/name_f]
[name_f]Araminta[/name_f] - [name_f]Minty[/name_f]
[name_f]Delphine[/name_f] - [name_f]Della[/name_f], [name_f]Delphi[/name_f]
[name_f]Giselle[/name_f] - [name_f]Gia[/name_f], [name_f]Gigi[/name_f]
[name_u]Juniper[/name_u] - [name_u]June[/name_u], [name_f]Juno[/name_f], [name_f]Juni[/name_f]
[name_f]Luella[/name_f] - [name_u]Lou[/name_u], [name_f]Lulu[/name_f]
[name_u]Tempest[/name_u] - [name_f]Tempe[/name_f]
[name_f]Margaux[/name_f] - Go Go
[name_f]Lucia[/name_f] - [name_u]Lux[/name_u], [name_f]Lulu[/name_f]
Rosalind/Rosamund - [name_f]Rosie[/name_f], [name_f]Rose[/name_f]
[name_f]Matilda[/name_f] - [name_f]Tilly[/name_f], [name_f]Tilda[/name_f]
[name_f]Primrose[/name_f] - Prim, [name_f]Posy[/name_f], [name_f]Rosie[/name_f], [name_f]Rose[/name_f]
[name_f]Theodora[/name_f] - [name_u]Theo[/name_u], [name_f]Thea[/name_f], [name_u]Teddy[/name_u]