My daughter’s name is [name]Mimi[/name] (short for [name]Mirabelle[/name]) and we are trying to decide on her new baby sisters name. Here is our list so far:
[name]Piper[/name]
[name]Grace[/name]
[name]Harper[/name]
[name]Cecilia[/name]
[name]Hannah[/name]
Any suggestions or favorites? Thanks!!!
[name]Love[/name] [name]Harper[/name] [name]Grace[/name]!
I quite like [name]Piper[/name] [name]Cecilia[/name]! 
Good-[name]Luck[/name]
Haha, contrary to the last two responders, I say choose a more feminine name since [name]Mirabelle[/name] is feminine. You don’t want one sister to feel destined to be the tomboy. So I like [name]Grace[/name] because it’s simple like [name]Mimi[/name] but strong. [name]Cecelia[/name] is nice, but [name]Mimi[/name] and CeeCee are too matchy of nicknames. “[name]Celia[/name]” is nice with [name]Mimi[/name].
I like the entire list and have to add that I love your daughter’s name AND nickname!
With [name]Mirabelle[/name] ([name]Mimi[/name]):
[name]Piper[/name] and [name]Harper[/name] - I love [name]Piper[/name] and [name]Harper[/name] but they seem a little “tomboy” compared to [name]Mimi[/name]
[name]Grace[/name] - I love the idea of [name]Mirabelle[/name] and [name]Grace[/name] ([name]Mimi[/name] and [name]Gracie[/name])
[name]Cecilia[/name] - [name]Cecelia[/name] and [name]Mirabelle[/name] are lovely together but I am not sure but the [name]Mimi[/name]/[name]Cece[/name] may override this for me. It may be hard to avoid.
[name]Hannah[/name] - A name I like but it seems a little flat next to [name]Mimi[/name]
[name]Grace[/name] [name]Harper[/name] would be lovely.
[name]Piper[/name] & [name]Harper[/name]- both great names, but feel very boyish compared to [name]Mirabell[/name]
[name]Grace[/name]- pretty but feels lackluster with [name]Mirabelle[/name]
[name]Cecilia[/name]- this is my favorite with [name]Mirabelle[/name], though nn wise I would avoid [name]Cece[/name] and go with [name]Celia[/name] or [name]Lia[/name]
[name]Hannah[/name]- I adore this name, but seems mismatched with [name]Mirabelle[/name]
Out of the names on your list the one that goes best with [name]Mirabelle[/name] is [name]Cecilia[/name]. [name]Cecilia[/name] [name]Harper[/name] is nice.
Some other possibilities:
[name]Mirabelle[/name] and
Instead of [name]Piper[/name] or [name]Harper[/name]: [name]Felicity[/name], [name]Valentine[/name], [name]Viveca[/name], [name]Vivian[/name]/[name]Vivienne[/name], [name]Phoebe[/name], [name]Philippa[/name], [name]Rowena[/name], [name]Honora[/name], [name]Germaine[/name], [name]Lorraine[/name], [name]Josephine[/name]
Instead of [name]Cecilia[/name]: [name]Cassandra[/name], [name]Carlotta[/name], [name]Cordelia[/name], [name]Cressida[/name], [name]Carolina[/name], [name]Aurelia[/name], [name]Amelia[/name], [name]Araminta[/name], [name]Anastasia[/name], [name]Lucinda[/name], [name]Clementine[/name], [name]Thalia[/name], [name]Lavinia[/name]
Instead of [name]Hannah[/name]: [name]Hannelore[/name], [name]Lorelei[/name], [name]Juliana[/name], [name]Juliet[/name], [name]Anastasia[/name] (nn [name]Ana[/name]), [name]Alessandra[/name], [name]Alexandra[/name], [name]Susannah[/name], [name]Henrietta[/name], [name]Helena[/name]
Other possibilities: [name]Genevieve[/name], [name]Simone[/name], [name]Rosamund[/name], [name]Roxana[/name], [name]Emmeline[/name], [name]Adelaide[/name]
I honestly feel [name]Cecelia[/name] is the only name on this list appropriate with [name]Mirabelle[/name] as a sister. You want something glitzy and glam with a playful, perky attitude, and you want it in a vintage, feminine package. I mean, if matching a sibling set is important to you, which it surely doesn’t have to be!
[name]Mimi[/name] and [name]Celie[/name] or [name]Celia[/name] or [name]Lia[/name] is lovely. Other names to consider are: [name]Beatrix[/name], [name]Coraline[/name], [name]Delphine[/name], [name]Dorothea[/name], [name]Eveline[/name], [name]Esme[/name], [name]Fiona[/name], [name]Gwendolen[/name], [name]Genevieve[/name], [name]Georgiana[/name], [name]Juliet[/name], [name]Jessamine[/name], [name]Katharina[/name], [name]Lucinda[/name], [name]Livia[/name], [name]Phoebe[/name], [name]Penelope[/name], [name]Rosamund[/name], [name]Ramona[/name], [name]Tallulah[/name], [name]Violet[/name], or [name]Valerie[/name]. Something with a perky nickname is always great, too - think [name]Bea[/name], [name]Bebe[/name], [name]Trix[/name], [name]Trixie[/name], [name]Cora[/name], [name]Coco[/name], [name]Delie[/name], [name]Della[/name], [name]Dora[/name], [name]Dory[/name], [name]Dot[/name], [name]Dottie[/name], [name]Thea[/name], [name]Eve[/name], [name]Evie[/name], [name]Essie[/name], [name]Fina[/name], [name]Faye[/name], [name]Gwen[/name], [name]Wendy[/name], [name]Dolly[/name], [name]Gen[/name], [name]Gennie[/name], [name]Genie[/name], [name]Neve[/name], [name]Evie[/name], [name]Vivi[/name], [name]Georgia[/name], [name]Georgie[/name], [name]Gigi[/name], [name]Jules[/name], [name]Jet[/name], [name]Jess[/name], [name]Jessa[/name], [name]Jessie[/name], [name]Sami[/name], [name]Mina[/name], [name]Kat[/name], [name]Kit[/name], [name]Kitty[/name], [name]Kate[/name], [name]Katie[/name], [name]Rina[/name], [name]Lula[/name], [name]Lulu[/name], [name]Lucy[/name], [name]Lucia[/name], [name]Cindy[/name], [name]Liv[/name], [name]Livy[/name], [name]Bebe[/name], [name]Bee[/name], [name]Penny[/name], [name]Nell[/name], [name]Nelly[/name], [name]Poppy[/name], [name]Rose[/name], [name]Rosie[/name], [name]Rosa[/name], [name]Romy[/name], [name]Roma[/name], [name]Mona[/name], [name]Lula[/name], [name]Lulu[/name], [name]Tula[/name], [name]Tally[/name], [name]Vi[/name], [name]Vivi[/name], Vio, [name]Lettie[/name], or [name]Val[/name].
I agree with this completely. [name]Love[/name] your daughters name/nickname!
A few more suggestions (sorry for any repeats):
[name]Juliet[/name]
[name]Celia[/name]
[name]Violet[/name]
[name]Adela[/name]
[name]Antonia[/name]
[name]Lucy[/name]
[name]Annabel[/name]
[name]Elodie[/name]
[name]Amity[/name]
[name]Catherine[/name]
[name]Sylvie[/name]
[name]Elise[/name]
[name]Amandine[/name]
[name]Romy[/name]
[name]Sabine[/name]
[name]Lavinia[/name]
[name]Delphine[/name]
[name]Verity[/name]
[name]Pearl[/name]
[name]Hope[/name] that helps!
[name]Cecelia[/name] and [name]Grace[/name] are both beautiful!
I think what’s already been said about the [name]Mimi[/name]/[name]Cece[/name] combo is super improtant. But you could always simplify it and go with just [name]Celia[/name]. [name]Celia[/name] and [name]Mimi[/name]…
I’m also a big fan of [name]Flora[/name]. I think it adds enough frill to match both [name]Mimi[/name] and [name]Mirabelle[/name], doesn’t rhyme with either the nn or the fullname, and has enough sophistication to age with her as she grows. [name]Flora[/name] and [name]Mimi[/name]. [name]Love[/name].