Jerusalem - "That Abbey cakewalk last month was just an audition," Tunick told Meggido Bikini & Burkhini News Illustrated reporters this morning.
"I plan to position Pippa slap bang in the middle of the lake, surround by hundreds of tanned lovelies - much like at the royal wedding congregation only clotheless!"
Proposals for Tunick's stunning new art installation featuring hundreds of nude Israelis floating in the Dead Sea very nearly bombed.
Resistance from hardline ultra-Orthodox Shas party members - er...elders! - who blew a gasket about the idea last January appears to be softening - as reports about Middleton's fantastic legs spreads.
Agents acting for the salubrious Pippa indicated this weekend she would be waiving an appearance fee which will be donated to the Sisters of Gramercy art charity.
Contractual small print is still under discussion including Tunick's request for the luscious Ms M to camouflage 'a highly distinctive' birth mark on her dainty derriere, said to resemble sister Kate's design for the family coat of arms.
But the upshot of the artist's proposals is for a pic to be chosen from the living artwork to illustrate a nude charity jigsaw loosely themed along lines of a Pin-The-Tail-On-The-Donkey lines.
"The idea is for art lovers to find Pippa in the 500-strong nude flotilla - based solely on recognition of her awesome bottom," Tunick explained.
The prize is rumored to be a signed first edition lithograph of the installation, the original of which will hang in a new exhibition at the Tate.
The artist's myriad previous mass nudity works include 500 Londoners at a famous department store, 500 New Yorker women 'and Jane Fonda' at Grand Central Station and 1,000 biscuit factory workers at the Kinky Nutz Digestives plant in Pratts Bottom, Wilts.
Carole Middleton is 69.