In this new world of faster fashion, you can shop many of the collections that just walked down the runways in New York (and Los Angeles) right now. Ralph Lauren has transformed his flagship with an immersive botanical installation inspired by the see now, buy now spring collection. It covers every wall of the store’s first and second floors, where, through Monday, you’ll find a lamé Lurex gown ($2,450) and beaded trousers ($5,990).

At 888 Madison Avenue.Michael Kors will continue his Ready-to-Wear, Ready to Go concept with an edited selection of pieces from the show, including a grommet pleated shirt ($2,150) and sarong skirt ($2,150) available immediately. At 790 Madison Avenue.Tommy Hilfiger has a silk print maxi-one shoulder prom dresses ($375) and patchwork knit top and skirt ($249.50) from the Tommy x Gigi collection that was revealed on Venice Beach. Or make like a supermodel and rent the aforementioned looks from Armarium for your next selfie opt for $75 apiece. At 681 Fifth Avenue; armarium.com.Photo

A top and skirt from the Tommy x Gigi collection, available now.Following her own Los Angeles presentation, Rachel Zoe has a sequin minidress ($295) and other glitzy frocks available on her website. At shoprachelzoe.com.An off-the-shoulder floral-print dress ($278) and suede jacket ($698) are among the Cali-cool pieces from the shoppable Rebecca Minkoff runway show. At 96 Greene Street.Adam Lippes is making a fitted evening dress featuring pretty gathering details at the sides ($990) from his fall collection available early on Farfetch. At farfetch.com.Club Monaco spring looks include a tieredmaxi-skirt ($189.50) and sweater with shoulder cutouts ($169.50). At 160 Fifth Avenue.

A print panel trench ($525) and cropped fleece jacket ($525) are among the outerwear options offered by Thakoon. At 70 Wooster Street.The Alexander Wang NO AFTER PARTY capsule collection includes branded tights ($125) and cutoff shorts ($225). At 103 Grand Street.And looks from the Burberry second direct-to-consumer show, including an asymmetric gabardine trench ($2,095) and cable-and-rib-knit collage sweater ($950), inspired by the work of British artist Henry Moore, will be available immediately after Monday’s show in London. At 131 Spring Street.Send a MessageWear a “The Future is Female” or “We Will Not Be Silenced” tee like the models in the Prabal Gurung runway finale (long-sleeve, $150; short-sleeve, $130). Proceeds will be donated to the ACLU, Planned Parenthood or Mr. Gurung’s Foundation Shikshya Foundation Nepal. At prabalgurung.com.Photo

Jonathan Simkhai is selling a shirt to benefit Planned Parenthood.Jonathan Simkhai is donating all proceeds from pre-orders of its “Feminist AF” tee ($95) to Planned Parenthood. At jonathansimkhai.com.Public School has its limited-edition hoodie with a Michael Jordan portrait on the front and a “We Need Leaders” logo on the back ($195) at its CFDA Retail Lab pop-up. At 330 Hudson Street.

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