Katy Perry's California Nails!

Spotted: Katy Perry, with some serious nails. "She wore an itty bitty polka dot ... A girl loves her nails!" the.

"R u ready for a dance off?" Perry Tweeted to a pal. "CLAWS OUT B–H!" And what claws they are – sparkly, bedazzled and very, very pointy.

Flashing the Union Jack on her tips, Perry had some naughty things to say about all the, ahem, activities fiancé Russell Brand would enjoy with her U.K.-themed nails. Scandalous!

Now that's some perfect bling for waking up in Vegas! "Diamonds ARE [a girl's] best friend," the singer Tweeted.

Before celebrating her 25th with a Charlie and the Chocolate Factory-themed bash last October, the birthday girl shared this shot of her custom tips, courtesy of Minx Nails.

To perform at the Hollywood Palladium, the proud owner of famous feline Kitty Purry sported another custom pair, this time in honor of her beloved cat. "Hopefully my kitty purry nails bring me luck tonight," she wrote.

Reaching out to another fab nail lover – Lady Gaga – Perry flaunted her animal instincts, writing, "I know y'alls nails will b fresher than mine, but hey gold leopard la-meee!"

Forget having a green thumb – Perry's got a whole garden in her hands! "Getting my nails groovy for New York City," she wrote about her floral fingers. Now one question remains: What will her nails look like when she marries Brand? Stay tuned ...