Up In The Air actress Anna Kendrick had so much fun filming a shower scene with Pitch Perfect co-star BRITTANY SNOW she considers the naked shoot "the best day of my life".

The two actresses stripped off on set and Kendrick admits her brave pal helped put her at ease.

She recalls, "When we started and were disrobing, I was like 'This is awful,' but by the end of the day, it was hot and humid..."

And now she has Snow's every curve etched on her memory: "At this point, I've got it memorised."