Would you use unintentionally 'matchy matchy' name for 2nd baby girl?

I think the examples you have used are fine. I know they’re not the actual names, but if there are differences like you’ve illustrated, then go for it! I would be wary of very similar sounding names like Milly and Molly or Rita and Peter!

In my close family, the girls have matchy names, and that includes the dog. Just do it 😁

As everyone else has said, it really depends on the actual names and how much of an overlap they are.

Lucy and Lottie seem ok, especially if one is actually Charlotte.
Lara and Lana sound very silly, even if one is actually Alannah.
Lucy and Libby sound ok, especially if one is Elizabeth.
Lucy and Lacey sound silly.

It’s difficult choosing a name when you are struggling to agree. But I’d remember you are naming an individual, not the second of a matching pair.

Dd3 has a friend named Billy and his sisters are Tilly and Milly. Of course their real names are William, Matilda and Amelia but no one uses them. Don't think people spend too long thinking of it though!

My sons have accidentally kind of matchy names, both 5 letters long starting with the same letter. They don't sound exactly the same, but I think people always think it's an intentional thing when they hear the names.

It wasn't really intentional, but like you we struggled to find names we both liked, and the two that we landed on are just a bit similar. We're going to have a nightmare if a third boy comes along haha.

Anyway only a couple of people have ever asked me about it and when I tell them how we landed on the names that's kind of the end of it. I don't think it's going to present huge problems really.

As you don't know the sex of the baby, why don't you wait until he is born?

unless they are derivative's of the same name completely (e.g Sophie and Sophia) I don't think it matters.
The first 3 grandchildren in our family are girls with S names. My work colleague's name starts with an F, as do her 2 children. My old boss was a C, as was his wife and their two boys...etc etc

It would be easier to comment if you told us the names? Understand why you might not want to.
I’m trying to think of examples of what you’ve described to help me decide! So it’s like

Lacey and Lucy
Abbey and Ashleigh
Katie and Carly
Morgan and Madison
Molly and Miley

that sort of thing?

Generally I would say it doesn’t really matter if you both like the names and they aren’t likely to be mixed up by people. I think it’s kinda cute.

Personally I would have deliberately avoided this, even if it was unintentional (no one will no whether it's intentional or not and many will assume it was). My dds get introduced as a pair fairly often so it would come up frequently. There are so many names out there that it should be easy enough to avoid.

I have the same first initial as my sister and both of us getting mail as Miss G Dawn was a pain when we both lived at home, at one stage we had the same bank and they mixed up some account instructions once!

I'd keep looking for names, but look at ones starting with other letters.
If you like Lottie you might like Hattie, if you like Laurie you might like Toby or whatever.

I don't think it really matters, @VanquishedColston but it will look matchy when you say 'Lucy and Lottie/Laurie'.

It won't matter with their friends or colleagues.

Unless the name rhymes extremely closely meaning that you would struggle to speak of them both in the same sentence. I would use the name you both like.

They'll be individual adults a lot longer than they'll be your sibling set, so if you've found the only name you both like just use it

I think it's fine and even quite sweet. As long as the vowel is different and the names can't get confused.

And that’s why it’s a personal decision really then as everyone is different. They don’t strike me as match matchy at all but I see what you’re saying so they obviously are! My son has 2 really good friends called Lucy and Lottie and I’ve never noticed or thought about the similarities.

I think it’s quite cute actually. Bit cringe if deliberate, but you’ve accidentally landed on it, so go for it and just enjoy it :)

For most of their lives they will be living independently, surrounded by people who don't even know their sister. Give dd2 the name you love.

I've taught twins called names as similar as Arielle and Ariella; nobody cared.

I mean you can obviously call your child what you want but if it is very similar to your first that's probably why you like it as it has familiar and comfortable sound.
I do tend find it a bit cringeworthy when siblings all match and think it's a bit like Keeping up with the Kardashians. It might also leave you in a pickle if you have any more children, do you then stick to your theme and commit to it or have an odd one out?
I would keep an open mind and consider other options especially because you don't know what gender you are having, there is no pressure to have a name immediately after birth. It took us 3 weeks to name our son for many reasons, one of them being the name we liked first pregnancy for a boy was matchy to what we called our DD. We had a few others that we kept thinking we had settled on and then after a while didn't feel right. Eventually we got a name that wasn't on any shortlist or even discussed before that. We lived with it a few days before announcing his name.

Could you just give us the potential nane and we could see if we can find something similar

@ElleJayC , they're very similar. They begin and end with the same sounds.

Charlotte and Lucy are fine.

It’s difficult to comment properly without knowing what the actual names are but I don’t think the Lucy and Lottie example are similar enough to worry - especially written down and even less so if you can throw in a Charlotte.

I’d probably rethink if you currently had a Molly and liked Milly and your nephew was Billy.