So I’ve realized if I use [name]Caroline[/name] with [name]Theodore[/name] for my twins, [name]Caroline[/name] needs a nickname as well. The problem is I can’t think of one. So if you guys can brainstorm [name]Caroline[/name] nicknames for me I’d be so thankful! If I can’t find a nickname for it that I love just as much as the full names I think I won’t be using [name]Caroline[/name]/[name]Theodore[/name].
I found some, though some might be stretches… how about:
[name]Cara[/name]
[name]Carly[/name]
[name]Carrie[/name]
[name]Caro[/name]
[name]Carol[/name]
Liney
[name]Linny[/name]
[name]Ali[/name] (maybe?)
What about [name]Coco[/name]? I think it’s adorable with [name]Teddy[/name]!
[name]Lina[/name] (pn’d [name]Leena[/name])
[name]Carlin[/name]
Car
Cars
[name]Ro[/name]
[name]Lin[/name]
[name]Callie[/name]
Caddy/[name]Caddie[/name]
[name]Cori[/name]
Everything I was gonna say has already been said but my favs are [name]Cara[/name], [name]Callie[/name], [name]Ro[/name], [name]Lina[/name] and [name]Coco[/name]! And I agree that [name]Teddy[/name] and [name]Coco[/name] would be super adorable!
Maybe Rowie too? I know a [name]Rohanna[/name] who goes by [name]Ro[/name] and Rowie so [name]Caroline[/name] nn [name]Ro[/name]/Rowie could work too!
I knew a [name]Caroline[/name] who’s mom called her [name]Linus[/name]. 
But most Carolines I know just go by the full [name]Caroline[/name].
Not to throw a wrench in your plans, but I haven’t been able to pick from your two sets b/c I love them both equally, but I love [name]Henry[/name] and [name]Alice[/name] infinitely more than [name]Theo[/name] and [name]Carrie[/name]. So if you are still counting votes…
I already thought of [name]Callie[/name], which I like but it doesn’t make me crazy happy. [name]Coco[/name] is interesting. It might grow on me. I kind of dislike everything else, but thanks for the help everyone!
I just love [name]Theodore[/name] [name]Atlas[/name] but I also love [name]Alice[/name]!
I don’t think having a [name]Caroline[/name] and [name]Theo[/name]/[name]Teddy[/name] would be a big deal. She doesn’t need a nickname if you hate them all. Or, you could come up with something that describes her once she’s born. I knew a little girl named [name]Johanna[/name] but she went by [name]Sunny[/name] because she was just so happy and joyful. She had long blonde hair and bright blue eyes and was always smiling. It just worked.
I know I’m going to repeat all or most but here are a few I think could work:
[name]Cara[/name]
[name]Carol[/name]
[name]Rollo[/name]
[name]Rolly[/name] (Rah-lee)
Linney
[name]Lina[/name] ([name]Lee[/name]-na)
Leenie (lee-nee)
[name]Carly[/name]
[name]Carrie[/name]
[name]Callie[/name]
If you go with [name]Astrid[/name] for her middle name, you could call her [name]Cass[/name] or [name]Cassie[/name]?
Oh [name]Teddy[/name] and [name]Cassie[/name] would be cute!
Since [name]Caroline[/name] is also a feminine form of [name]Charles[/name], you could go with [name]Charlie[/name]/[name]Charley[/name] or [name]Char[/name]. There’s also [name]Chip[/name] or [name]Chuck[/name], but she might not thank you for that!
I know a little baby named [name]Caroline[/name] and her parents call her [name]Coco[/name]! (her initials are CO, so I think that has something to do with it, but it’s cute for any girl named [name]Caroline[/name]!). It’s so cute. I know a few Carolines, most just go by [name]Caroline[/name] but affectionate nicknames include [name]Caro[/name], [name]Cara[/name], [name]Carly[/name] and [name]Linny[/name]. I think [name]Coco[/name] is definitely the cutest though, and so sweet with [name]Teddy[/name]!
I know a [name]Caroline[/name] that goes by [name]Ollie[/name], I think it’s cute!
I love the nn [name]Clio[/name] for [name]Caroline[/name]! But it wouldn’t work with [name]Theo[/name] :-/