Kate Moss Tattoo: Lucian Freud 'Tramp Stamp' Body Ink Artwork Worth $1 Million [PHOTO]

In a recent Vanity Fair exclusive interview with the beautiful supermodel Kate Moss, the 38-year-old blonde bombshell opens up about some of her dirtiest little secrets... including her sexy romance with Johnny Depp, past heroin use, and the fact that her "tramp stamp" tattoo is worth a whopping $1 million! That's right - the body artwork flaunted just above Moss' stunning bum was inked by the late German painter Lucian Freud. The famous artist painted a nude portrait of Moss when she was pregnant with her daughter Lila Grace in 2002 - and the two instantly hit it off as friends. When Freud admitted that he used to tattoo buddies when he was in the Merchant Navy during WWII as a youngster, Moss decided to jump on the opportunity. And now the two small swallows encompassing the model's lower back are worth a fortune!

Shortly after their first 2002 get-together, Freud etched the birds on the small of Moss' back using just black ink. "He told me about when he was in the Navy, when he was 19 or something, and he used to do all of the tattoos for the sailors. And I said, 'Oh my God, that's amazing,'" Moss told Vanity Fair. "And he went, 'I can do you one. What would you like? Would you like creatures of the animal kingdom?' I said I liked birds and he replied,' I've done birds.' And he pointed down at a painting of a chicken upside down in a bucket to which I replied, 'No, I'm not having that.' We decided to do a flock of birds."

Moss, who has always been a big fan of Freud, understands that her 21^st century "tramp stamp" is worth a lot of cash - "I mean, it's an original Freud. I wonder how much a collector would pay for that? A few million? If it all goes horribly wrong I could get a skin graft and sell it! It's probably the only one on skin that's still around." Many publications price the original body artwork for at least $1 million (some reports say it could possibly as much as $1.6 million).

And how about the nude portrait that led up to the infamous bird duet tattoo? Well, it took nine months to finish and sold for auction in 2005 for an outstanding £3.9 million euros (about $6 million):

"I went to [Freud's] house and he started [the nude painting] that night. Couldn't say no to Lucian. Very persuasive. I phoned Bella [his daughter] the next day and said, 'How long is it going to take?' She said: 'How big is the canvas?'. I said, 'it's quite big.' She said: 'Oh dear, could take six months to a year."

Freud died in July 2011 at the age of 88. "Lucian was always really kind, I adored him," Moss reflects. But it looks like the English model is lucky enough to always have Freud a permanent part of her for life (at least on her back).

For more of the Vanity Fair exclusive, click here.