I imagine you mean Rarity from MLP:FIM. Every episode, because she is the Element of Generosity (therefore one of Mane 6). She stars in (off the top of my head) Sweet and Elite, A Dog And Pony Show, Green Isn't Your Colour (w/ FS of course), and Sisterhoove's Social.
A character in the television series My Little Pony: Friendship is Magic.
Silence in the Library.
Rarity acts like a fashion-nut. She's very picky and doesn't take no for an answer. You could say she's a little bossy.
I don't know what you mean by bannanas shooting, but Charlie the Unicorn 2 is all about bannanas, and how Charlie is the "Bannana King."
A unicorn is something unattainable. In gone in 60 seconds this refers to a shelby mustang. This is a very rare and hard to come by car. Nearly mythical in it's rarity.
Unicorn, Pennsylvania, is believed to have derived its name from a local tavern called the "Unicorn," which was established in the mid-19th century. The tavern likely took its name from the mythical creature, symbolizing rarity and uniqueness. Over time, the name stuck and became associated with the community that developed around it.
"The Art of the Dress" is from season 1 episode 14 "Suited for Success."
The stick on a unicorn's head is commonly referred to as a horn. It is typically depicted as a long, spiraled, and pointed structure that is often associated with the unicorn's magical abilities and purity. In mythology and folklore, the horn is believed to possess healing powers and can purify water. The unicorn itself symbolizes grace, beauty, and rarity.
My Little Pony Make me Better with Rarity the Unicorn is recommended for 36 months and over.
None of them necessarily changed other than Twilight Sparkle, who went from a unicorn to an alicorn (a unicorn with pegasus wings) in season 3 episode 13 "Magical Mystery Cure"
No. She does not appear.
This description seems to most closely match Cheerilee, the school teacher.