First Vogue UK , then Cosmo , now Vogue?

Adele may have actually landed a coveted cover on the mag, insiders say. Rumors are swirling that the British songstress is Anna Wintour's celeb of choice for the March issue, which would make it Adele's biggest cover yet -- and an unconventional choice for Vogue.

Natalie Portman, Lady Gaga, Emma Watson, Kate Moss, Kristen Stewart -- Vogue's 2011 cover girls have generally fit the lithe, size 2/4 mold (with the exception of this month's Meryl Streep, who we're guessing is a tad curvier).

But Women's Wear Daily reports that designers have been asked by Vogue to create custom outfits for March's cover girl, who is a size 14.

It is certainly possible, given that Adele donned a formfitting Dolce & Gabbana dress on the December cover of Cosmopolitan . She's also worn plenty of designer threads on the red carpet, including Burberry at the VMAs .

A March cover would be a major coup, given that it's the second most important issue of the year (after September), covering the all the biggest spring trends and brimming with ads. But the Adele pick isn't official yet -- a little birdie told the editors at Styleite that another Grammy-winning singer is getting the coveted March spot: Taylor Swift .

So who will it be? Rather, who would you like to see?