Meghan Markle pregnancy rumours swirl over belly ruffle

New photos of Meghan Markle in a blue dress have kicked into overdrive rumours that she and Prince Harry are expecting a baby according to Newshub.

The Duke and Duchess of Sussex were snapped attending the 100 Days of Peace benefit concert in London on Thursday evening (local time).

Meghan wore a bright, blue, knee-length Jason Wu dress - the ruffles of which got tongues wagging on Twitter.

"Am I the only one the see pregnant? " asked Twitter user @NotoriusNormani.

"I have a feeling Meghan Markle is pregnant," stated Denisse Hernandez.

Some social media users even added a red circle to the photos around the alleged baby bump.

In other photos from the same outing, the belly ruffles of Markle's dress are less visible.

Earlier this month, Australia's New Idea ran a story claiming it had exclusively confirmed Meghan's pregnancy through a "Kensington Palace insider".

The unnamed source is credited as also saying Meghan and Harry would be cancelling their upcoming tour of Australia and New Zealand as a result.

The rumour has not been commented on officially by the Royal Family.