30 years as a Latter-day Saint and have never once heard anyone referred to as "Royalty". You've seriously sunk to a new low.

(I'm getting the feeling that between your "we never use" a reference to "Elder brother" Satan...which I proved your "never" wrong several times over...and now this...that you just don't seem to "get out" and circulate with your fellow Mormons...are you living a sheltered Mormon life?)

April 2015 General Conference Resources for Mormon children (put out by Mormons but not an official lds.org site)

Q: If you were to describe a Royal person, what would he or she be like?
Answers can range from attitudes to clothing and jewelry, etc. Write them on the board.
Have props on hand to place on a “volunteer”. These can include: crown, robe, gown, jewelry, scepter (made from cardboard)…
Have a girl come to the front, and go through the list on the board, dressing her in the items you brought.
Q: So, does ______________ look like a princess?
A: No!
Q: Why not? She has on all of the things you mentioned were royal.
A: Take answers from the girls, and have your “volunteer” sit down.
Q: Would you like to know what Royalty looks like to me?
...“God has given the women of this Church a work to do in building his kingdom – which is, first, to teach the gospel to all the world; second, to strengthen the membership of the church; and third, to carry forward the work for the dead. Know that you are daughters of God, children with a divine birthright. Walk in the sun with your heads high, knowing that you are loved and honored, that you are a part of his kingdom, and that there is for you a great work to be done which cannot be left to others.” - Gordon B. Hinckley
Everyone in this room, everyone in this building is royalty. Everyone in this state; in this country; on this continent…. You get the picture. We are all royalty because we are all children of our Heavenly Father.
Sugardoodle.net General Conference resources for April 2015

We see "royalty" references in...
...the Lds church-owned Deseret News From the Homefront: From the Homefront: How to live like the Royal Family
...Pinterest.com pages where Lds members tout artsy stuff that proclaims "Be Loyal to the Royal Within You" (see We are all Royalty | crowns | Pinterest)
...Mormon quizlet cards online based upon Mormon classes that proclaim "we are all royalty we are entitled to his kingdom" (Livingstone Final)
...blogs on "Rational Faiths: Keeping Mormonism Weird" mentioning "we are all royalty" (Christmas Reflections: The Three Wise Men Posted by Julie Smith in Bible Scholarship, Featured, New Testament)
...a response to a blog ("We should all just address each other as 'Your Royal Highness.' We’re all royalty anyway!) per TimesAndSeasons.org: Melissa B. March 19, 2010 response to Alison Moore Smith's 'Do Titles Matter?'
...online Book of Mormon studies Book of Mormon Study
...instagram messages: Mormon Chick @mormon_four_life Instagram profile ...www.enjoygram.com/mormon_four_life Dec 15, 2014 - See Mormon Chick (@mormon_four_life) Instagram profile on Enjoygram. ... http://lds.org ... don't ever forget who you are! we are all royalty 👑 ...

Boy, all this Mormon nobility is a LOT of mountainous stuff to wade thru!

Lds as 'Kings and Queens'

Lds "scripture" used by some Mormons as "royalized" self-massage messages:

Doctrines & Covenants 88:37:

37 And there are many kingdoms; for there is no space in the which there is no kingdom; and there is no kingdom in which there is no space, either a greater or a lesser kingdom.

Joseph Smith says plainly -- right there -- that "there is no space in which there is no kingdom"

You might say, so what?

Well this is how some Mormon bloggers interpret D&C 88:37: 37 And there are many kingdoms; for there is no space in which there is no kingdom; and there is no kingdom which there is no space. (we are all Kings and Queens of our Kingdoms)
The Book of Mormon; Doctrine and Covenants 88:6-50 (April 23, 2010)

Then you have Mormon online forum site administrators discussing the implications of the "celestial kingdom":

Being a king or queen and making babies for a couple billion years probably gets boring at some point. I'm just harping on that to make my point. Joseph Smith maybe was given a cool story.
Happiness in the Celestial Kingdom? (Brian Johnston, Forum site admin, Washington DC, Nov. 18, 2011)

This causes a Mormon poster named Brown in the discussion to ask a few days later: "If we are all 'Kings and Queens', then King and Queen doesn't have much meaning. King over whom? Other Kings?"
Happiness in the Celestial Kingdom?

Btw, this above was in the "History and Doctrine" board index discussions.

Just as everyone was prom king and queen for an evening at the dance, we are all kings and queens in God’s eyes every day.
One Special Night (New Era, Feb 2009)

Now a few of these references -- like this last one -- is simply using regal language to convey a special attentiveness.

But many other references above go far above that.

No matter context: You said:

I have NEVER ONCE HEARD ANYONE REFERRED TO AS "ROYALTY"

(Which simply shows how 'out of touch' you are in claiming to represent ALL of Mormon culture out there)

And, now you can NO LONGER say "never" to the above!

And, hey, I gotta a new Mormon tagline out of all this!

April 2015 General Conference Resources for Mormon children (put out by Mormons but not an official lds.org site)

Lds as 'Kings and Queens'

I have NEVER ONCE HEARD ANYONE REFERRED TO AS "ROYALTY"

How come you know so much about Mormonism?