Kate Middleton has reportedly owned the "push present" she showed off at Wimbledon for decade.

On Sunday, the Duke and Duchess of Cambridge stepped out together to watch the men's final for the tennis tournament. The citrine stone embellishment on her right hand caught attention, and it is believed that it was a present from Prince William after Middleton gave birth to their son, Prince Louis, in April.

Rebecca Perring, a journalist for Daily Express, however, reported that the Duchess of Cambridge was photographed with the same ring in January 2008 when she celebrated her 26th birthday. She was also snapped with the same yellow ring leaving Kitts club in Sloane Square with sister, Pippa Middleton. The duchess also wore the accessory for Prince Harry and Meghan Markle's royal wedding in May.

The speculations suggesting that the ring was a "push present" from Prince William was not surprising. Royal fathers usually give their partners gifts to thank them for enduring hard labor.

Prince Philip reportedly gave Queen Elizabeth a large bottle of champagne and a bouquet of red roses after delivering Prince Charles. On the other hand, the Prince of Wales spoiled Princess Diana with lavish presents, including a diamond and pearl necklace with a dazzling heart at the center, a gold "W" to add to her charm bracelet and a custom Mini Cooper.

Meanwhile, Middleton received a pendant inscribed with "George Alexander Louis" after giving birth to Prince George. The duchess also reportedly received a pair of green tourmaline, green amethyst and diamond earrings made by Kiki McDonough following Princess Charlotte's birth.

In related news, Middleton previously watched Wimbledon with her sister-in-law, Markle. The two duchesses witnessed the women's final, where Serena Williams lost to Angelique Kerber. Both were moved with the athlete's speech after her Wimbledon loss.

"It was such an amazing tournament for me. I was really hoping to get this far," Williams said. "It's obviously disappointing, but I can't be disappointed. I have so much to look forward to. I'm literally just getting started. To all the moms out there, I was playing for you today and I tried."

Markle and Williams have been friends for years. Williams, meanwhile, recently said she considers Middleton one of the toughest women she knows.

Kate Middleton
What's the secret behind Kate Middleton's "push present"? Pictured: Middleton and Prince William arrive to watch South Africa's Kevin Anderson play Serbia's Novak Djokovic in their men's singles final match on the thirteenth day of the 2018 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 15, 2018. Getty Images/Glyn Kirk