Should I give my honest to God opinion or just keep quiet?

And we all like different things and think "good taste" or "shit choices" apply to different things.

Aren't received messages alway to the left hand and sent to the right hand? 🙈

Because of the font, I thought Katherine was marrying Mr William Shitlips.

The style of invitation that @RosesAndHellebores is talking about was called a "stiffie" back in the day, because engraved on stiff card. There used to be quite a little competition going on among my more Hooray friends to see who had the most on their mantlepiece at any one time.

Anyway @Payets I think you're being disingenous because you wouldn't have offered to help with ribbons and wax seals if you didn't like that style. The absolute bottom line is that noone cares, it doesn't matter and the only people who need to approve any of the details of this wedding are the ones getting married.

Same here. It's fine if you're a teeager obsessed by Lord of the Rings and its like.

Honestly she has given you options of things she likes and you should stick to that list - not tear it up and suggest something else

if she really loves a dress and it’s not to your taste will you tell her that?

@RosesAndHelleboresour wedding invitations were on blue card, I used an Ink Stamp with a design on the front and glued in a print out of the info on the inside. Did it how I wanted to broke the rules.

jt was over 10 years ago but wondering if I’m expecting a visit from the police? Are there invitation police?

seriously, if people are going to judge me for my wedding invitations then they shouldn’t come.

That's a tradition, not a rule. Not everyone keeps to traditions. Many people send their invitations by email these days, nothing wrong with either way.
Hell, you could deliver bright pink notes by strippergram if you chose, and it's still ok. As long as there's a name, date, time and venue, you can deliver your invitations in any format you choose. Including floral bordered invitations like the OP's sister.

These invitations are also invites from the brides parents

Most women have left home and are financially independent these days and also paying for the wedding with their fiancé’s

this is old fashioned and sexist

I have been married and I have been to loads of weddings and I cannot recall how a single invitation looked, let alone opening one and thinking "wow what a tastless piece of stationery" . That is how trivial it is, and out of interest there is nothing horrible about that border.

Your sister is right though, no one cares what wedding invitations look like.

I actually quite like her bright & colourful invitations. If they were printed with a nice font on high quality card they'd look good.

So…you tell her she looks hideous and can’t go out in that outfit, you start a thread that calls her slapdash and low effort and you criticise her wedding and try to turn it into something that is your taste?

you might be her sister but you aren’t her “best friend”

one day, there will be a huge fall out and you’ll be all shocked and hurt.

please back off and start being nicer to your sister!

As an aside, the white wax seals look like some rolled up condoms in that picture.

I do hope you and your sister carry on having a close, loving relationship. There's a big difference between telling her that the dress she's wearing shows her knickers/makes her look a way that you know she wouldn't want to etc. and saying her invitation border is horrible.

Just leave it and enjoy the closeness you both have.

I can’t believe you’re looking at debretts.

Really ?!
and We usually agree on so much 😞

Yeah she doesn’t need you to tell her that everything about her wedding is shit. Just be supportive.

Here
https://debretts.com/how-to-design-your-wedding-invitations/

But you would think that wouldn’t you, because you’re obviously completely unaware of how controlling you sound. I think you might be surprised by what some people actually think about your ‘brutal honesty’, but I’m not sure you’re self aware enough to contemplate that.

Where's the rule book

We made ours so I wouldn’t know what’s in the shop but we’ve never had this A5 all white format from anyone

Ours was a single sleeve and fitted fully in a long envelope.
Meanwhile having just googled ‘wedding invites shopping’ there’s masses that are not just white, many with lots of colour, many of colour and even a black and gold!

No...it is... you just don't see it.
You're detail orientated, she's slap dash and low effort?
You could have said I get over fixated on detail whereas she is more laid back and easygoing and doesn't sweat the small stuff. But you didn't write that because you think your way is better and hers isn't... but it's her wedding and her choice.
So No... dont give your opinion

There is a traditional format but there is absolutely no rule.

It doesn't matter if your children are receiving fifty invites a day in the same traditional format.

There is no rule that those are the only kind that can be used, and it would be staggeringly obvious to anyone with a cursory Google search that many other options are available.

That’ll be it then! It was doomed from the start! 🤣

There absolutely is.

So will you be ‘brutally honest’ with her if she falls in love with a dress that you think is a ‘shit decision’? I have in-laws like you who say they’re ‘brutally honest’ when in fact they’re just plain rude. Maybe have a think about whether this process is as much of a two way street as you seem to think, it could actually be the case that you hurt your sister’s feelings but she just doesn’t feel she can tell you that.

There is no such thing as bad taste - only other people's. In this situation, you are "other people's"!

Honestly Roses there’s no rule or traditional format for wedding invites