'Tis the season ... to show off your really cool nails!

Lily Allen is definitely feeling the Christmas spirit -- the singer posted a picture of her awesomely festive nails on Thursday, tweeting "Best nails @nailsbymh #lolidays #sicklife," with the photo.

The "5 O'clock" singer's polish included a Santa Claus, reindeer, mistletoe, snowman and candy canes. Who needs an "ugly sweater" to celebrate when you have a holiday manicure?

She's not the only star showing off their Christmas spirit!

Click "Launch Gallery" above to see more holiday cheer from your favorite celebs, and check out the gallery below to see even more cool nail art!


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