Last week, the Who's Laughing Now hitmaker made a dig at celebrities who use the website to upload pics of themselves in their underwear, with some of her Twitter followers suggesting her rant was aimed Rihanna.
Jessie wrote: "I'm bored... Maybe I should get naked and smoke and take pictures of myself and post them on instagram? Or NOT... *rolls eyes*"
The Voice coach went on to insist that her tweet was not hitting out at the Bajan babe, and has seemed to have now adopted a 'if you can't beat them, join them' attitude after posting photos of herself wearing a bikini while poolside in Singapore.
She had also previously tweeted: "I do like instagram. Twitter is great. Just very negative a lot of the time these days. So I'm not on it as much :)."
The Essex babe showed off her toned figure in the snaps, as she frolicked in a swimming pool with a friend while admiring stunning views of the city.
One of the images bared the caption: "Life is good", while another said "Living on the edge."
Jessie went on to hint that fans can expect new material from her later this year, tweeting: "Had a meeting last night with my team till 2am discussing shows for 2013 and singles!! Aaaahhh!! So exciting!!"
Pics: Instagram @isthatjessiej
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