Six days after announcing her pregnancy, British royal Zara Phillips competed in the Brightling Park International Horse Trials on July 14, 2013. Credit: Mark Cuthbert/UK Press via Getty Images

Zara Phillips isn't giving up her beloved pastime just because she has a bun in the oven. Six days after Queen Elizabeth II's eldest granddaughter announced that she is expecting her first child with rugby player husband Mike Tindall, the 32-year-old competed in the Brightling Park International Horse Trials in Robertsbridge, England, on Sunday, July 14.

A spokesperson for Phillips recently defended the mom-to-be's decision to participate in equine sports while expecting: "She is being sensible about this and is listening to what doctors are telling her. She would never put her pregnancy in jeopardy."

Phillips won a silver medal at the Summer Olympics in London last year. She is the daughter of Princess Royal Anne and first husband Captain Mark Phillips; the athlete is currently 14th in line to the British throne.

Coincidentally, Phillips' first cousin, Prince William, is expecting a baby of his own with wife Kate Middleton. The Duchess of Cambridge was due July 11 and is expected to give birth imminently.