The launch, understood to have the working title Project Gloss, is being overseen by IPC group editorial director Mike Soutar and group creative director Andy Cowles.
More! editor Alison Hall has resigned from Emap to join the project. She told colleagues she was leaving to take up "the opportunity of a lifetime".
Emap has invested £16m in Grazia, which debuted in February, creating the first UK glossy with a weekly frequency. It has been widely predicted that others would follow it into the market.
The 52-page supplement, aimed at AB women, will go out with the November issues of Marie Claire, Woman & Home, In Style, Homes & Gardens, Living Etc and Wedding.
It will feature fashion, accessories and travel, and is targeting advertisers of watches, jewellery and other luxury Christmas gifts.
IPC claims the supplement will reach 2.7m women, including 1m ABs, more than any other magazine or newspaper supplement. An ad page in the first half of the magazine will cost £32,000.
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