Prince William's cousin Zara Phillips who is currently pregnant was spotted out with husband Mike Tindall and her growing baby bump.

The Royal attend the Boodles Boxing Ball on Saturday wearing a dress from the Duchess of Cambridge Kate Middleton's go to maternity designer, Seraphine.

The gown Philips wore featured a two-toned silk maxi dress style that made the expecting mother look radiant. The blonde bombshell who is currently carrying the next royal baby looked full of joy as she made her way into the event.

According to HELLO! Magazine, Cecile Reinaud, the founder of Seraphine said, "We are delighted that Zara chose to wear Seraphine to the Boodles Boxing Ball."

She continued, "It gives us our second royal stamp of approval this year!" The UK-based maternity line gained fame after Kate Middleton debuted the brand's "Blossom Knot Front Lavender Dress" during one of her first outings with royal baby Prince George.

However, when the Duchess opted to wear a similar Seraphine dress for the official royal baby portrait a few weeks later, every expectant mother became familiar with the retailer.

Reinaud even acknowledged that last month Seraphine saw a 400 percent growth in sales since Middleton started wearing their dresses back in April. And now it seems that Zara Phillips has joined the fashionable mommy train.

To check out Zara Philips in her Seraphine gown from the Boodles Boxing Ball on Saturday click HERE.