Clash

Clash's doll outfit (A)
First appears in Starbright Part 1: Falling Star and again in: Starbright Part 2: Colliding Stars, Starbright Part 3: Rising StarThe Rock Fashion Book.
Model sheet number Unknown
Hasbro produced this doll & fashion.
Trivia This is the first version of Clash's doll outfit. After this point it is replaced by "The New Clash", and finally by Clash (C).
Clash Blond ponytail disguise
Makes its first and only appearance in Starbright Part 3: Rising Star
Model sheet number Unknown
Hasbro did not produce this fashion.
Clash Snowmobile outfit
First appears in Last Resorts and again in: Video Wars (reused footage). 
Model sheet number
Hasbro did not produce this fashion.
Clash Workout Gear
Makes its first and only appearance in Last Resorts.
Model sheet number Unknown.
Hasbro did not produce this fashion.
Clash Ski Race outfit
Makes its first and only appearance in Last Resorts.
Model sheet number Unknown.
Hasbro did not produce this fashion.
Clash Reporter Disguise
Makes its first and only appearance in The Jem Jam Part 1.


Model sheet number Unknown
Hasbro did not produce this fashion.
Clash Permed hair disguise

Makes its first and only appearance in The Jem Jam Part 1.


Model sheet number Unknown
Hasbro did not produce this fashion.
The New Clash
First and only appearance is in Glitter and Gold. This is a modification of the first original outfit (A) that debuted in Starbright Part 1: Falling Star. First and only appearance is in Glitter and Gold. Note that "The New Clash" (shown only in Glitter and Gold) has longer hair with only a slight suggestion of a rat-tail, also for whatever reason, her makeup is mirrored. Her belt looks more like the doll's belt and the shoes are also pink. After this point it is replaced by Clash's original outfit C), which is basically the original version, but with all purple hair instead of red & blue.
Model sheet number The New Clash
Hasbro produced this doll & fashion. Clash debuted much earlier in the series, but the New Clash seems to be a revision based on what the produced doll would look like. The make-up is mirrored in some scenes. Most notably the legs are bare on the cartoon; the doll wore pink tights. As far as I know, Clash is never shown on the cartoon with her distortion modulator and/or headphones. The bracelets on the cartoon are shown to have "jingles" in them; the doll merely got pink zig zag bracelets. The doll did not have earrings. There is no buckle shown on the cartoon version of the belt. 
Credits
Thanks to Sharon for donating the original line art to the Jem wardrobe!
Clash Cleaning Lady Disguise
Makes its first and only appearance in One Jem Too Many
Model sheet number Unknown
Hasbro did not produce this fashion.
Comments
I guessed on the footwear.   They actually kinda match!
Clash Purple Triangle Dress (Jem Disguise #1)
Makes its first and only appearance (on Clash, anyway) in One Jem Too Many.
Model sheet number Unknown
Hasbro did not produce this fashion.
Clash white corset Striped Dress (Jem Disguise #2)
Makes its first and only appearance (on Clash, anyway) in One Jem Too Many.
Model sheet number Unknown
Hasbro did not produce this fashion.
Clash's Original outfit (C)
First appears in Father's Day and again in: Video Wars.
Model sheet number Unknown
Hasbro produced this doll & fashion. Clash debuted much earlier in the series (blue and red hair!), was revamped for the "New Clash" in Glitter & Gold, and revised one last time to become this Clash, back with the rattail, different belt and shoe colour.
Comments
Note that this fashion is Clash's original outfit, except with all-purple hair in place of the red and blue streaked hair.
Clash Pink Tuxedo Suit
First appears in Father's Day and again in: Aztec Enchantment, Video Wars.
Model sheet number Unknown
Hasbro did not produce this fashion.
Credits
Thanks to Cosmic Falcon for donating this drawing to the wardrobe section!
Clash Rose/black white dress
First appears in Father's Day and again in:

Video Wars. (Clash in Video disguise)

Model sheet number Unknown
Hasbro did not produce this fashion.
Clash Pink/Black/White party dress
First appears in Father's Day and again in: Video Wars.
Model sheet number Unknown
Hasbro did not produce this fashion.
Clash Black Fringes Vest
Makes its first and only appearance in Aztec Enchantment.
Model sheet number Unknown
Hasbro did not produce this fashion.
Clash/Sarah
Makes its first and only appearance in Video Wars.
Model sheet number Unknown. 
Hasbro did not produce this fashion.

Clash Bathing Suit
Makes it's first and only appearance in Change of Heart.