Anna Kendrick gets embarrassed when fans approach her while she's underwear shopping.

The 'Pitch Perfect' actress doesn't understand why people feel the need to ask for her autograph when she's got a pair of panties in her hands.

She joked to GQ magazine: ''There's something deeply embarrassing about being approached when you're holding knickers and it's happened twice!''

The petite star plays one half of a dysfunctional relationship in her new film 'Drinking Buddies', and says she is just as obsessed with beer as her craft brewery worker character, citing ''every single Belgian-style beer'' as her favourite tipple.

When informed that OkCupid claim beer drinkers are more likely to go home with someone on the first date, Anna - who is currently single - was intrigued.

She joked: ''Oh my! I mean, correlation doesn't suggest causality - but that is f***ing interesting.''

Anna split with her long-term boyfriend, filmmaker Edgar Wright, in March. The pair had been dating since 2009 when he directed her in 'Scott Pilgrim vs. The World'.

Speculation was rife the 27-year-old star might have struck up a relationship with her 'What To Expect When You're Expecting' co-star Chace Crawford earlier this summer, but the pair appear to just be friends.