Princesses Beatrice and Eugenie fly the flag for Britain on trip to GermanyGetty

Princesses Beatrice and Eugenie are in Germany for their first joint overseas duty to help promote British business.

The royal sisters are in Berlin for a two-day tour promoting the UK as part of the Great Campaign - a global initiative to attract visitors, business and students to the UK.

First up? A pit-stop at the Brandenburg Gate to launch the Great Britain Mini Tour across Germany, a trip which will showcase the very best of Britain - from culture and technology to music and innovation.

Both princesses posed for pics next to a mini decorated with a Union Jack, before Princess Eugenie hopped behind the wheel and took it for a spin through Berlin to the British Embassy.

Princesses Beatrice and Eugenie fly the flag for Britain on trip to GermanyRex

Before their little drive, Princess Beatrice gave a small speech, and said the Great Campaign was designed to showcase the very best Britain has to offer, including its "beautiful countryside; lively cities; and some of the world's most incredible museums and hundreds of unique historic places".

According to the Daily Telegraph, she added: ''The Great Campaign also has a serious business side - Britain has trend setting fashion, groundbreaking scientists, and innovative technology companies.

''It is also a welcoming home for investors. We're here to encourage more German businesses to join the thousands that are developing successful partnerships in Britain.''

Another stop was the Berlin British school where Beatrice was questioned by one cheeky youngster about the famous Philip Treacy 'pretzel' hat that she wore to the Duke and Duchess of Cambridge's wedding.

Princesses Beatrice and Eugenie fly the flag for Britain on trip to GermanyRex

Beatrice, who later sold the hat for charity for £81,000, was spotted describing the fanciful creation - complete with descriptive hand gestures - to eight-year-old Alex Cunningham.

She also got arty by writing her name in hieroglyphics when she joined the class, where both sisters also gave a talk to the kids, and were praised by the school for their friendliness.

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