All eyes were on Pippa Middleton today as she showed off her growing baby bump in the Royal Box at Wimbledon.

The 34-year-old sister of the Duchess of Cambridge looked radiant as she joined her brother James at the annual tennis championship.

Dressing for the warm weather, Pippa chose to wear a chic midi-length white dress which featured frilly sleeves.

She teamed the Bergman dress – which costs £680 – with a pair of blue wedge espadrilles and carried a cute Jess Collett straw hat as she made her way inside.

The pretty brunette accessorised her look with a pair of brown sunglasses and carried a woven clutch bag as she grinned for photographers.

James, 31, had also made an effort for the occasion and looked very dapper in a pair of white trousers and a navy blue blazer.

Pippa announced her pregnancy last month in her column for Waitress Weekend magazine.

Pippa’s column, Exercising During Pregnancy, talks about the adjustment with her sports routine during her first trimester.

“When I learned the happy news that I was pregnant, I realised I needed to adjust my normal 4-to-5-day-a-week routine and find a way of continuing my exercise safely throughout the three trimesters,” she wrote.

“I’m fanatical about sports and have looked at loads of books and websites on exercise during pregnancy but have been disappointed by the limited technical information on what you can and can’t do. I found that particularly so during the riskier first trimester. And this being my first pregnancy, I had so many questions I felt were all unanswered.”

Pippa also revealed that she and her husband James Matthews kept the happy news private when she first learned of her pregnancy, and that unlike her sister Kate, she hasn’t suffered from severe morning sickness.

“I was lucky to pass the 12-week [mark] without suffering from morning sickness. That meant I was able to carry on as normal and continue most of my sports with better knowledge and, more importantly, professionals to learn from.”

She added: “I’ve noticed my body change and weight increase, but through effective exercise and sports I feel that it’s being strengthened to support a healthy pregnancy, birth, and recovery.”

Well, it looks like pregnancy certainly agrees with her!