Jade - who's a designer for royal British jewellers GARRARD - flew into a rage when she spotted the COLOR OF NIGHT star in the STARS AND BARS VIP bar backstage at the glitzy bash in Monte Carlo, Monaco.
March had just presented an award to Irish singer Ronan Keating, and was sporting $800,000 (GBP500,000) worth of diamonds from Garrard's rival CHOPARD - despite promising Jagger, daughter of rocker SIR Mick Jagger, that she would wear her designs.
A source tells British tabloid THE DAILY MIRROR, "Jade stormed up to Jane and demanded, 'What the hell are you wearing?'"
And when Jane told her the make of the dress, Jade retorted, "Not the dress, the f***ing diamonds. I thought you were going to wear my stuff."
Despite Jane's apologies and promises to wear the 31-year-old's creations next time, Jade stropped, "No you f***ing won't. I don't want you ever wearing my stuff again. You're f***ing bang out of order."
A source adds, "Jane didn't wear any of Jade's jewellery because she liked the Chopard stuff more."14/10/2003 14:00