Kate Middleton attended the women’s semi-final Wimbledon match Thursday recycling a body-hugging bright yellow number by Roksanda Ilinčić. However, her latest appearance reignited rumors about her health.

An OK! Magazine report, cited by Radar Online, said that the Duchess of Cambridge’s weight has dropped under 100 pounds. The magazine said that her weight is “scary” considering she's 5 feet 9 inches tall.

“She’s lost a dramatic amount of weight,” a source told the magazine. “She’s way too thin. It’s no wonder there’s been so much speculation about her health.”

Although Middleton “insists she’s fine,” sources reportedly said her husband Prince William is “worried sick about her.”

“She’s definitely not her usual sparkly self right now ... she’s not sleeping and has totally lost her appetite,” the source told the magazine. Furthermore, Middleton’s second pregnancy “[was] the most exhausting experience, alongside all the royal duties she's had to deal with, including that huge tour of India. Her family is urging her to put on 15 pounds before autumn,” the insider reportedly said.

Previous such reports about Middleton’s health have been debunked by Gossip Cop.  Last month, a National Enquirer report said that the duchess has become “scary skinny” and those close to her have expressed concern about her health. The National Enquirer also reported that Middleton needs to change her eating habits. However, Gossip Cop called the magazine’s report false.