Harry’s tip-top birthday bash! The Sussexes celebrate Duke’s 39th at a brewery bar in

Prince Harry turns 39 today and partied with Meghan in a traditional German bar last night where he washed down bratwurst sausage and wiener schnitzel with six beers, MailOnline can reveal.

The Duke and Duchess of Sussex enjoyed a night out in Dusseldorf with friends as the Invictus Games draws to a close.

Bar staff said the royals were ‘lovely’ and left a ‘big tip’ as they enjoyed plates piled high with red cabbage and mashed potato. While Harry celebrated with six half-pints, his wife stuck to just one small drink.

Diners at the Im Goldenen Kessel restaurant and bar were asked not to take pictures but said they saw the prince laughing and joking as the food arrived at his table. He also looked thrilled when a birthday cake arrived at the end of the meal.

He and Meghan posed for photographs with the owner of the restaurant Thea Ungermann and head waiter Frank Wackers who has worked at the restaurant for 38 years.

The Duke and Duchess of Sussex celebrated Harry’s 39th birthday in a German beer house. Pictured: The Sussexes with the owner of the restaurant Thea Ungermann and head waiter Frank Wackers

The couple were seen laughing as they cozied up to each other during the volleyball match earlier yesterday

Prince Harry tucked into plates of bratwurst sausage, red cabbage and mashed potato at the restaurant (pictured)

Ms Ungermann, who owns Im Goldenen Kessel in Dusseldorf, and Mr Wackers who has worked at the restaurant for 38 years

Diners were told not to take pictures of the royal couple but saw the prince laughing and joking as food arrived at his table

Harry was served six half-pints while Meghan had just one small beer

Pictured: The street where Im Goldenen Kessel is located

Ms Ungermann told MailOnline: ‘Harry was a lovely man and was having a very jolly time. Meghan was lovely.’

Meghan stuck with the white skinny jeans she wore to watch the volleyball match yesterday. She paired it with a red and white pinstriped shirt and nude ballet pumps. Meanwhile Harry wore dark jeans and a grey top.

During his meal, Harry was presented with a birthday cake by staff at the restaurant, based in Dusseldorf’s old town.

He and his party took up two tables at the restaurant, which is part of the Schumacher brewery, and were served their food and beer by Mr Wackers.

Mr Wackers told MailOnline that Harry had six small beers – about half a pint rather than the litre sized beers most German breweries serve.

He said the group were served Wiener Schnitzel, pork knuckle, sausage and plates of roast and mashed potato.

Pictured above is the menu for Im Goldenen Kessel, where Harry celebrated his birthday

Earlier on in the day, the Duke and Duchess attended the volleyball match at the Invictus Games

The pair delighted fans, taking selfies, hugging and chatting with them ahead of the match

Mr Wackers said: ‘They were very happy. He is a lovely man, and they were so nice.’

He also joked that Harry’s bodyguard asked what was the beer like.

‘He said that he would kill me if the beer was bad, but I know he was joking.’

Aides and staff sang Happy Birthday as the restaurant presented Harry with a white chocolate cake.

After tucking in, the party then walked back to their waiting cars in the cobbled Altstadt area of the city.

A source close to the prince said: ‘They drank local beer and ate family style dishes to experience a true German meal. Everyone was incredibly friendly, especially the waiters pictured in the photograph online.

The couple were seen cheering on the teams as they stood with crowds watching the Ukraine vs Nigeria match

The beaming duchess takes a selfie with Invictus star Glory Essien at the Mekur Spiel-Arena in Dusseldorf

Meghan hugs a Nigerian support at the preliminary round of the mixed volleyball games

The couple laughed as Meghan waved a Nigerian flag and took selfies with others within the crowd

Meghan appeared amused as Harry chatted to her during the tense game

The Duke and Duchess of Sussex put on a red carpet-style display at the Invictus Games yesterday

Harry places his hand on Meghan’s arm yesterday as the pair interact with fans at the Ukraine v Nigeria volleyball match

The smiling Duchess of Sussex puts her arm around her husband at yesterday’s games

Harry and Meghan smile for the camera as a fan takes a selfie

Harry was so happy to be at yesterday’s festivities that he even performed a dance from the stands

As he starts dancing, Meghan continues to chat with adoring fans

‘They did not dine in a private space and were in joyful spirits, toasting and laughing with the team.

After dinner, the group headed back to the hotel to sing Happy Birthday and eat cake just shy of midnight.’

The owner of the restaurant said Harry picked up the bill and left a big tip for the staff.

The restaurant is attached to the Schumacher brewery, one of two popular venues in Dusseldorf.

Crowds flocked around the Duke and Duchess as they headed to the arena to watching the volleyball and table tennis games yesterday

The couple appeared on the edge of their seats as they watched the game yesterday afternoon

Meghan looked glamorous in white skinny jeans and a Ralph Lauren sweater vest. Harry opted for a pair of black jeans paired with a denim blue shirt

Sharing a selfie with the duchess, Ms Essien wrote: ‘Our princess is in the house to watch her village people play Ukraine’

Earlier this week, the couple were seen watching the wheelchair basketball final at the Invictus Games in Germany

The couple were reunited on Wednesday, where Meghan gave a speech to a crowd of participants

During the speech, Meghan apologised for being late to the games adding that she had to take her eldest Archie, four, to school

Yesterday Prince Harry spoke with those who were attending his charity’s huge annual event

Meghan Markle opted for another muted outfit yesterday, wearing a brown silky shirt and trousers

Both Ms Ungermann and the head waiter speak fluent English so were able to take Harry and Meghan’s orders without needing to translate them into German.

Harry and his party had driven from their hotel in the Media Harbour of the city and were dropped off by a pedestrian area.

They walked the 50 yards to the restaurant past other bars before occupying two tables in a raised section of the restaurant which is next door to a McDonalds.

The party drank the locally brewed beer called Alt Schumacher which is also served at the Merkur Spiel-Arena where the Invictus Games are held.

Ms Ungermann said: ‘The couple were very relaxed, they drank our beer, Schumacher Alt – it’s the same beer they are serving at the Invictus Games.

‘Harry and Meghan sat next to each other during the meal. I had goosebumps when they walked into the restaurant, I had watched his speech on the stage at the Invictus Games and couldn’t believe he was in my restaurant. Prince Harry was so lovely and gave me a hug.’

While she has opted for inexpensive high street looks in her last few appearance, the Duchess went high end yesterday – and paired the look with £165 oversized Miu Miu sunglasses