At Louis Vuitton, Kim Kardashian and husband Kanye West snuck into the show through a secret back door inside a space-age silver dome.
And inside another galactic atrium, duo Michelle Williams and Jennifer Connelly applauded from the front row as designer Nicolas Ghesquiere sent the Vuitton style on a futuristic journey with piles of fur, sex and sparkle.
Here are the highlights from the final day of fall/winter shows in Paris:
LOUIS VUITTON'S 2015 SPACE ODYSSEY
Not content with just the 100 million-euro ($126 million) building designed last year by Frank Gehry, powerhouse Louis Vuitton constructed three space-age domes on the grounds of the Louis Vuitton Foundation just for Wednesday's fall-winter show — proving that the sky's the limit for the flagship LVMH brand.
There was something cinematic about the display, the clothes, the carefully constructed metal beams and domes and the silver screen talents who attended.
Movie mogul Harvey Weinstein shared a joke with Connelly and Williams, who were joined by French movie icon Catherine Deneuve in the futuristic atrium. Not far away, Chloe Grace Moretz took her seat with Selena Gomez on the 2015 space-tinged odyssey.
NICOLAS GHESQUIERE'S FALL-WINTER SHOW
Ghesquiere's strong collection, which started with a punch, had a graphic, space-age edge.
Giant white furs with huge cushion collars — one on Asian model Fernanda Hin Lin Ly with funky pink hair — were worn with demure black leather pencil skirts or huge metallic trunk bags that had a glamorous, futuristic sheen.
A corrugated silver look — a figure-hugging top and skirt that flared out in circular discs at the hem and the sleeves — continued the galactic vibe.
But there was also more than a hint of sexiness — like cut-outs over the bust, short '60s mini-dresses, leopard print sheaths and coats and a sensual black slip dress.
This Vuitton girl seems to have done some welcome growing up since last season's ultra-young affair.
MIU MIU'S PATTERN CONTRASTS
Prada's little tongue-in-cheek sister brand Miu Miu touched on the hot fall trend of fusing together contrasting patterns.
Houndstooth, check, blown-up python, tartan and croc — all were there, mixed and matched in bold yellow, blue, red and black. The contrasting silhouettes produced funky results, a vibe reminiscent of East London, with its haphazard jewelry and sense of style through discord.
A leopard-print coat in blue sported a collar in blown-up snakeskin, and came with a high-waisted, textured red blown-up tartan skirt, a thick "Dennis the Menace" sweater, a python handbag and huge blue sun-shaped earrings.
Miuccia Prada just baptized this season's motto: Pile it all on — more is more.
Rising Chinese designer Masha Ma is known for her chic, futuristic styles with an industrial edge.
Wednesday's show saw variations on Oriental styles — lapels on boxy coats, exaggeratedly wide and unfurling in beautifully subtle earth colours.
The esthetic was fused with a dose of geometry — boots that sported blocked colour bands, leggings, or graphic black lines down knee-length skirts.
One beautiful minimalist textured dress in sienna and another in earth green had curved bands in the sleeves and neck that accentuated the model's body geometry and her black arm bands.
The angular lines reached a creative climax in a series of dresses with squares, triangles and bands that could have been part Aztec, part Art Deco.
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