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.
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.
"The Art of the Dress" is from season 1 episode 14 "Suited for Success."
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."
My Little Pony Make me Better with Rarity the Unicorn is recommended for 36 months and over.
No. She does not appear.
This description seems to most closely match Cheerilee, the school teacher.
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"
The very first episode "Friendship Is Magic- Part 1", all of the Mane Six are introduced and it is revealed that Spike is attracted to Rarity.
because rover the diamond dog leader spanked her and called her "hyah mule!"