Angelina Jolie is unimpressed by Brad Pitt's recent boozing, it's claimed.

The couple are said to be at odds after the actor developed a taste for German beer during their recent stay in Berlin.

According to In Touch, their different attitude towards partying was evident at a party they attended last month following the Berlin premiere of The Curious Case Of Benjamin Button.

During an evening in which Brad's glass was "always half full", the actor was reportedly heard exclaiming, "Wow! The Germans make the best beer in the world! One more, please!" - much to Angelina's dismay.

One for the road? Brad leaves the German 'Benjamin Button' premiere clutching a bottle of Krombacher beer

While the actress is said to have left early so she could get a good night's sleep, Brad continued to party into the early hours.

A source explains, "Angelina was tired, so she kissed Brad good night and headed back to the Hotel Adlon in Berlin, so she could wake up at 5am to feed their six-month-old twins, Knox and Vivienne.

"But while she slept, Brad stayed out until 2am at the after-party at Kaisersall."

Brad looks 'refreshed' as he poses for pictures at the premiere afterparty

And the reason for Brad's alcohol-fuelled nights out?

The source adds, "Brad's pals believes that, in some ways, he misses his carefree, kid-free days - so he sneaks away for solo nights of drinking to recapture his youth."

See more stars looking 'refreshed' below