Meghan Markle's outfit at Princess Eugenie's royal wedding has convinced some fans that she's indeed pregnant.

The Duke and Duchess of Sussex reunited with Prince William, Middleton and the rest of the members of the royal family for Princess Eugenie's big day. For the event, Markle wore a Givenchy dress, but fans were not able to see it as it came with a matching buttoned-up coat.

A number of Twitter users are convinced that Markle has a bun in the oven. In fact, the odds of the Duke and Duchess of Sussex having a baby have slashed again. Ladbrokes are offering 5/4 odds on an announcement by the end of the year down to 2/1.

"It's surely a case of when and not if the Duke and Duchess of Sussex announce they’re expecting their first child, and after Meghan's choice of outfit at Eugenie's wedding, punters are now expecting an imminent announcement," Jessica Bridge of Ladbrokes said.

"William Hill have been forced to take evasive action after punters steamed in to the fact that Meghan & Harry are expecting their first child," Rupert Adams of William Hill said. "At the start of the day we were 2/1 that the Duke & Duchess of Sussex would have a baby in 2019, the price is now 1/1 that they will have had a baby by the end of June 2019. The speculation appears to due to a 'loose fitting' coat at wedding of Princess Eugenie."

According to E! News, the pregnancy rumors intensified as there were also speculations that Markle might not join Prince Harry's trip to Fiji.  The country is confirmed to affected by Zika virus which is unsafe for pregnant women and their unborn child as it may cause birth defects.

"There is evidence of ongoing Zika virus transmission in Fiji," the report from the International Association for Medical Assistance for Travellers read. "Take meticulous anti-mosquito bite measures during the daytime. Pregnant travellers should postpone travel to this country."

Aside from Fiji, Markle and Prince Harry are set to visit Tonga, which is also affected by the same virus. It is recommended that women who visit these countries wait at least six months before trying to conceive.