I think so too. This poster previously was an experienced horse person, female, and wrote in coherent English. Now the poster knows next to nothing about horses (well, I mean, aside from “driving multipuls”), is male, and can’t make it through a sentence without misspelling a word. And the beloved wife seems to vacillate between doing the hunters and jumpers. But she only owns two pairs of pants 
As recently as 3 days ago “house” was capable of stringing words together into a sentence and now can’t. And “house” shows draft horses in driving so why is she going to the “LONGINES FEI JUMPING WORLD CUP™ LAS VEGAS” to show “rusty stirrups.” By her prior posts, the real “house” is a more than capable, experienced horsewoman who doesn’t need help figuring out what to wear at a horse show. At least, not like this. The whole thing is… very suspicious and I would be careful if “house” backchannels you etc.
I think post is legit in some form as the Las Vegas National is also home to the USHJA National Championships, which have classes for all ages/levels: https://www.ushja.org/competition/national-championship
Yes but you know what class is not offered? “Rusty Stirrups.” And, neither is “Rusty Stirrup.” Here’s the prize list…
Maybe “house” left her account logged in and some kid is goofing around or something? But I think it’s pretty clear the posts today are not the person usually behind the “house” account. And they do not read like an adult native English speaker who lives on a farm and therefore would be expected to be SOMEWHAT horsey and not completely clueless.
I just did a quick skim of OP’s post history. Is it possible that this thread was made by her spouse? Potentially. I do see mention of showing draft horses previously that is written in completely differing syntax than this whole thread. That seems more likely than the account being hacked or somehow taken over by a bot.
(I did flag it in case mods want to take a look at IPs or anything)
It’s the spelling that makes me think it’s not an adult native English speaker writing. “Outfit” and “multiples” aren’t even horse words. They’re just regular old words that a kid in grammar school would be familiar with.
House refers to their wife multiple times in other topics that they have started. (In the year 2023, just because they are talking about their wife doesn’t necessarily mean that the poster is male, but I see no indications that the poster is specifically female either.)
Boarder has hard keeper, am I obligated to do more? In this topic “my wife’s mare”
Do I need a Base for my arena? In apparently the first thread ever started by house… “getting ready to build a dressage arena for my wife”
Even if two people share this account, none of the prior posts have grammar and style anything like today’s?! Maybe they have kids and the kids want to buy a surprise present and are logged in and pretending to be an adult? But it odd…
Oh come on, I would guess 2’ schooling hunters could easily be translated into rusty stirrup by a spouse or trainer. 
At the end of the day, if you can’t be helpful, why even bother?
You do know that sometimes people have medical incidents or progressing disease that can affect their ability to communicate in a way that meets your standards.
You know you’re not being fair. I don’t care how people communicate. I’m just pointing out that whoever is posting today doesn’t sound like the longtime poster and may be a scammer so people can have a heads up. Please give me some benefit of the doubt and read my posts on this thread in context. I don’t go around correcting spelling on threads regularly or call people out for communication differences but this poster really feels like a scammer in the posting today. I am trying to be helpful in flagging that for people who might otherwise be lulled into thinking this is a regular post who can be trusted.
But you’re not being fair either—it’s been proven that the show does indeed have classes that fit the bill the OP described and the OP has posted in reference to their wife before. They haven’t done a single thing that’s truly “scammy.”
You’re ignoring the multiple head scratching aspects of the posts beyond confusing a 2’0 schooling class for a class called rusty stirrup. None of this makes sense! You’re looking for reasons to find this to be legitimate and the fact that it requires any sort of stretch to make sense is evidence that it also could be a scam.
The out of character post
The getting the name of the show wrong
The getting the name of the class wrong
The confusion between hunters and jumpers
People posting about clothing and the OP responding back about a bit instead
All the misspellings which should have been caught by a spellcheck on a device set to English
The wife only having two pairs or breeches and two shirts but going to a three day show
The spouse apparently knowing the wife’s sizes well enough to just randomly guess and buy two items hours after starting the post
The idea that a horsey spouse who lives on a farm with a boarding facility would be so muddled etc. etc.
It’s odd and people should be careful! That’s all I’m saying.
They haven’t done anything scammy yet but often scammers create some post history before posting phishing links etc. that’s a well recognized pattern designed to lull people into being less suspicious.
The 2’ adult hunters, which is offered, is very frequently referred to as rusty stirrup. There is nothing sketchy at all about this thread or poster. I knew exactly what they were talking about from the jump.
Maybe step back from the keyboard for a minute and chill.
I took that to mean she has a bit of clothing, not a bit like on a bridle.
OP has also mentioned going to local shows with the wife before, so it may be the first time she has shown at something that’s somewhat of a bigger deal and a longer show.
Essex show shirt is definitely appropriate attire and a nice shirt.
So are the breeches, but I haven’t tried those on personally to comment on fit, color or quality.
This user’s registration info and IP address correlate with information he’s provided in previous threads, so we don’t see a reason to doubt that his post/question is genuine.
Good luck to your wife!
A friendly reminder that just because someone has a wife, does not make them male.
Thank you. I hope that @vxf111 and some of the other unnecessarily nasty posters will come back to apologize.
These are both great options!
How kind of you to do this for your wife.
I would do a LONG SLEEVE shirt though vs a short sleeve personally, especially if your wife is in a mesh coat.
They have fun patterns here - https://www.smartpakequine.com/pt/essex-classics-talent-yarn-long-sleeve-show-shirt-11096
They also have The Lunas now that have the popular BIB style - https://www.smartpakequine.com/pt/essex-classics-luna-performance-long-sleeve-show-shirt--25497
You could get a black with white bib if her coat is Black or a navy bib if her coat is Navy!
If all her other shirts are SS then stick with what you know, just my suggestion!
Just to put your mind at ease let me address your concerns
Multiples is most definitely a horse word, you can read more about it here. the first result I googled
An outfit in the English language refers to a set of clothes worn together, typically for a particular occasion or purpose.
Sorry I dont typically post in Hunter jumper because I dont do it, and know very little about it.
I literally copied and pasted the name of the show from their website so if it is wrong sorry.
Sorry I just know what classes she typically enters, I did not fill out her entry forum
a bit also can refer to a small piece, part, or quantity of something. as in she has some clothing
I have been going to shows for years and I am still confused how you can have a flat jumper class or a jumping hunter class
sorry my grammer sucks
I keep my wife’s size her contact info on my phone, It comes in handy for her birthday, Christmas etc
You should definitely watch out for people asking for advice that I have a no idea how could possibly used maliciously.
