She is one of the most plushified ponies despite being one of the most difficult to craft, though I guess the kirin would be taking that slot these days with those crazy lion manes and long tails. Regardless, people love having a real life embodiment of their favorite horse princess!
Below, check out a bunch of the amazing Lunas created over the years. If only we all had unlimited money to buy all the moon.
[0] SourceLife-Size Laying Princess Luna by Joltage on Deviantart [1] Source
Princess Luna Custom Plush by NazFX on Deviantart
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Princess Luna Custom Plush by NazFX on Deviantart
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S2 Princess Luna Custom Plush by NazFX on Deviantart
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Luna and Nightmare Moon by EquestriaPlush on Deviantart
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Poseable Princess Luna plushie by Epicrainbowcrafts on Deviantart
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Lifesize Luna faux fur mane by Epicrainbowcrafts on Deviantart
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Casual Princess Luna beanie plush by Epicrainbowcrafts on Deviantart
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Princess Luna Plushie v2.0 by moggymawee on Deviantart
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Princess Luna season 2 plushie by Rens-twin on Deviantart
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Lifesize standing Princess Luna swarovski crystals by Epicrainbowcrafts on Deviantart
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Princess Luna Season 1 Plushie - SOLD by MakeItSew on Deviantart
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Princess Luna BIG plush [mlp fim handmade plushie] by LanaCraft on Deviantart
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Wet mane Luna with socks by Epicrainbowcrafts on Deviantart
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The lifesize has been doubled! 75 inch / 185cm! by Epicrainbowcrafts on Deviantart
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Casual Princess Luna - with faux fur by Epicrainbowcrafts on Deviantart
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Casual Princess Luna available at bronycon 2019 by Epicrainbowcrafts on Deviantart
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Princess Luna Plushie - SOLD! by moggymawee on Deviantart
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Luna 01 by adamlhumphreys on Deviantart
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Plushie: Filly Luna (Woona) - MLP:FiM by Serenity-Sama on Deviantart
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Plushie: Princess Luna - My Little Pony: FiM by Serenity-Sama on Deviantart
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Luna for Shizuko2 by adamlhumphreys on Deviantart
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Princess Luna by WhiteDove-Creations on Deviantart
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Luna plush by nekokevin on Deviantart
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Brocade Plushie Sisters: Luna (For Sale) by weRDunfo on Deviantart
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Luna plushie with Glow-in-the-dark sparkles! by Jillah92 on Deviantart
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Plushie: Princess Luna (S1) - MLP: FiM by Serenity-Sama on Deviantart
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Luna - Custom Plush by Fire-Topaz on Deviantart
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16 inches Princess Luna updated pattern :) by calusariAC on Deviantart
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Luna by DoctorKoda on Deviantart
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Plushie Princess Luna - 65 cm long by Burgunzik on Deviantart
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Lifesize 49 inch Princess Luna plush by qtpony on Deviantart
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Luna Christmas Stocking by Peruserofpieces on Deviantart
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Princess Luna by DoctorKoda on Deviantart
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Luna Filly by LiLMoon on Deviantart
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Lying Princess Luna Plushie by rtry on Deviantart
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Plushie Princess Luna by Burgunzik on Deviantart
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Life Size Season 1 Princess Luna by Vile-Flesh on Deviantart
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Bat Princess Luna with pet bat by calusariAC on Deviantart
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Plushie Princess Luna Mermaid - Sea Pony by Burgunzik on Deviantart
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Pretty Pair of Luna by WhiteDove-Creations on Deviantart
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Plushie Princess Luna by Burgunzik on Deviantart
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Sleeping Luna by Valmiiki on Deviantart
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MLP Princess Luna Plush (commission) by Little-Broy-Peep on Deviantart
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*For Sale* - Custom Sleepytime Luna Beanie Plush by Sonic-Spatula on Deviantart
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Plushie Princess Luna 11 inches by Valmiiki on Deviantart
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[FOR SALE] Princess Luna pony plushie by MalwinaHalfMoon on Deviantart
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filly Luna with shoes and socks by calusariAC on Deviantart
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Princess Luna with fur by Essorille on Deviantart
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Light up Luna Plush by meplushyou on Deviantart
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Plushie Princess Luna aka shiroi neko - 65 cm long by Burgunzik on Deviantart
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Luna filly plush by Masha05 on Deviantart
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expanding wings Luna plush by nekokevin on Deviantart
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22in AU Luna in Uniform by EmberfallPlush on Deviantart
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Custom plush Luna 12 inches by Valmiiki on Deviantart
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Streetwear Luna by Baraka1980 on Deviantart
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Gamer Luna MLP plush by adamar44 on Deviantart
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Luna by BlueDragonflyPlush on Deviantart
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Princess Luna (royal blue, regalia) by Peruserofpieces on Deviantart
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Princess Luna Plush by My-Little-Plush on Deviantart
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Princess Luna (royal blue, au naturel) by Peruserofpieces on Deviantart
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Princess Luna Plushie by DixieRarity on Deviantart
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Princess Luna S2 by LiLMoon on Deviantart
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Princess Luna Plush by My-Little-Plush on Deviantart
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Princess Luna (with regalia) by Peruserofpieces on Deviantart
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season 2 Princess Luna by faktim49 on Deviantart