Kate Middleton and Prince William in Singapore (Photo : Twitter: @Roro_style)

Kate Middleton’s pregnancy rumor can only be fueled more wherever she goes.

The Duchess of Cambridge sparked speculations for her pregnancy when she reportedly rejected wine at a state banquet in Singapore Tuesday, according to The Daily Beast.

Currently, Kate Middleton and Prince William are on their 9-day tour of South East Asia and the South Pacific.

Middleton made toasts to the Queen twice with water, instead of the usual full glass of wine during a seven course Chinese course in the Banquet Hall at the official residence of the Singaporean president, the Beast said.

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Did Kate Middleton show “a hint of a baby bump” as The New York Daily News claims? The Duchess was dressed in a floral shift dress designed by

Prabal Gurung during the meal. We cannot quite tell yet whether her usually flat stomach had any sign of a bump.

The same day, the royal couple made a visit to the Botanical Gardens in Singapore to view the Dendrobium Memoria Orchid, which was named after the late Princess Diana.

Middleton’s attire was a loose-fitting kimono-style cream dress by Jenny Packham, which would cover up her baby bump, if there was any.

"Friends say Kate is convinced it's happened, and while she and William are keeping the news close to the vest, they're delirious with joy," a source told Star magazine.

“A woman can always tell when the earliest signs appear, and it’s believed that a passionate night together at their rented country house on an estate in Wales, just after the end of the London Olympics, did the trick.”

"It would be formally through the palace press office, but only after the royal gynecologist is absolutely convinced that Kate is in peak condition," said the source.

“William sits in a very open position. Both she and her Prince have genuine smiles as they gaze at each other. Even after a year, it appears the honeymoon is still on,” body language expert Linda Talley told Hollywood Life about the royal duo's ecstatic time at the Olympics.