Kate Middleton may be on maternity leave, but that didn't stop the pregnant mother-to-be from spending time with her dad on Sunday for Father's Day.

Us Weekly reported that before her husband, Prince William, becomes a father, the Duchess of Cambridge enjoyed some quality time with her dad Michael Middleton in her hometown of Bucklebury, Berkshire.

Sources said the 31-year-old, who is expecting her first child in July, went to lunch with Michael at a "local restaurant." No word if Kate's younger siblings - Pippa, 29, or James, 26 - or even her mother Carole accompanied the duo.

Meanwhile, Prince William, 30, and his 28-year-old brother Prince Harry spent Father's Day at the Tianjin Goldin Metropolitan Polo Charity Cup in Tetbury, England.

While Prince William and Kate have yet to reveal the gender of the baby, they are extremely excited for their little one.

"They're both so excited and have so many questions," a source close to the family said. "They want to know what the baby will look like and who it will take after."

On June 15, Kate made her last public appearance before she gives birth at the Trooping the Colour ceremony in London. The event was also a celebration of the Queen's birthday. Kate showcased her baby bump in true royal fashion, dressed in a pale pink Alexander McQueen coat. Her outfit had many speculating if the color of her coat hinted to the fact that she is expecting a baby girl.

Fans in the United Kingdom continue to take bets on what the addition to the royal family will be named. Many people believe that if the baby is a girl, she will be named Alexandra while others have speculated that Charlotte will be the name, according to The Mirror.

Analysts estimated that the birth of Kate and Prince William's baby could boost the economy by $380 million, according to a recent report.

"This is a good news story and there really is no downside. With the birth coming in July, people will have time to get involved, and that means additional spending," Joshua Bamfield, director of the Centre for Retail Research (CRR), said in a statement.