A mum has taken to Mumsnet after her sister-in-law chose a baby name that rhymes with her own daughter’s.

In a rant on the online forum, she said the monikers will provoke ‘awkward comments’ when the girls are together, The Mirror reported.

The parent does not reveal the names at first, but says it would be similar to calling them ‘Leonora and Deeonora’.

She then reveals in the comment section that her daughter is called Lorelei and her niece has been named Porelei.

The mum said it has made her daughter's 'classic' name become 'tacky' and asks the other mums if she is overreacting.

And the outburst has sparked a big reaction.

The parent took to Mumsnet to seek advice from other mothers

She wrote: "She's named her daughter a name which rhymes with our daughter's...and sort of cheapened it made it into a bit of a joke."

To make matters worse, the woman claims her sister-in-law's stepsister is now planning to call her unborn daughter a similar name.

The outraged mum claims the alternative names are either "unheard of" or completely made up and will provoke "awkward comments" from people when the girls are introduced together.

Writing on the forum, she said: "My sister-in-law (SIL) is very close to us. She adores my daughter and recently had a daughter of her own.

"My daughter has a fairly classic name, not unheard of but pretty rare. Not a short name either.

"SIL recently had her baby, a girl, and we were thrilled for her.

"She's named her baby daughter a name which rhymes with our daughter's name.

"The name is from another country (their family has heritage from this country) but unheard of in the UK - it's not like our daughter is called Holly and she's named hers Molly, more like... If our daughter was called Leonora (she's not) SIL has names her daughter Deeonora.

"This isn't the best example but I'm trying to show you the sort of vibe my daughter's name has, and also show that the two names are VERY noticeable as rhyming names and because of the very very very unusual nature of her daughter's name, it looks like it was done deliberately (it was, by her).

She said it would be like calling the children ‘Leonora and Deeonora’

"Anyway, this p****d me off secretly because we spend a lot of time with SIL and are a close family and our daughter's will be together a lot. I feel like by giving her daughter the name she has, she's sort of taken away from the niceness/individualness of our daughter's name and sort of cheapened it made it into a bit of a joke.

"The two names together sound truly ridiculous and instead of having "What a lovely name!" Comments that we used to get for DDs name, we have already started getting some looks and awkward comments from people when the two girls are together and we tell them their names.

"This isn't even the worst of it. So SIL has a stepsister who isn't related to DH but who we are also pretty close to as SIL is.

"We spend a fair amount of time with her. SILs stepsister is also expecting a little girl and we have just found out she's planning to name her baby a ridiculous name which she has TOTALLY made up, which rhymes with our daughter's name too! So imagine now it will be like Leonora, Deeonora and Keeonora or something.

"Am I being unreasonable to be absolutely gutted? I know it's not my place to say anything and I won't but I just feel SO upset and angry, I burst into tears when DH told me.

"It took us ages to think of a classic, uncommon but pretty sounding name for our DD and now I feel like SIL and her SS are just making us all look like absolute fools. I don't like rhyming names for close relatives at the best of times, but to have stupid made up names too... I really feel like they've made my DDs name go from being sweet and classic to tacky and nasty.

"Please tell me I'm horribly overreacting because this is really bothering me and I really wish it wouldn't! I feel absolutely gutted and am thinking of changing DDs name."

The mum says she feels like her daughter's name has gone from 'sweet and classic to tacky and nasty'

The mum's lengthy rant prompted a big response of varying opinions.

One user wrote: "Don't change your daughter's name. I get why you'd feel annoyed, but it sounds like it's being blown out of proportion.

"A similar thing happened with me and my cousin. It's occasionally been inconvenient because people have misheard but the world hasn't ended.

"If your daughter is older then it'll be obvious that the normal named child came first and that the others have parents with odd decision making skills."

But another parent sympathised.

They wrote: "I'm horrified by this and would feel pretty much as you do. Take your time to decide what to do.

"I would hate for you to change a name so loved and chosen with such care, and it's certainly not fair.

"I would consider however calling my daughter by some other name that you could love as much - just to try it out - and possibly putting the new name in the middle of current ones.

"It just gives you options later without losing the current name altogether."