A Singapore court has sentenced an Australian man to nine days in jail for grabbing Hollywood star Ariana Grande at a movie premiere.

Johnson Wen, 26, was found guilty of being a public nuisance in the high-profile incident last Thursday at the Asia premiere for Wicked: For Good.

Videos posted on social media showed Wen jumping the barriers, charging at a visibly shocked Grande, and grabbing her shoulders while jumping up and down.

The incident sparked outrage in Singapore where many called for the arrest and deportation of Wen, who has a history of disrupting concerts and celebrity events.

Several accused him of "re-traumatising" Grande. The pop star turned actress has spoken of experiencing post-traumatic stress disorder after a suicide bomb attack at her May 2017 concert in Manchester, killing 22 people and injuring hundreds.