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16 March 2012, 11:28 | Updated: 16 March 2012, 11:47
The 'California Gurls' star gives fans a sneak peek at the upcoming promo of her latest single.
Katy Perry has posted a trailer to the official music video for her new single 'Part Of Me' earlier today (16th March).
The 'Teenage Dream' star took to her Twitter account to tease details and announced that the full release will be unveiled on 21st March.
She tweeted: "That was THEN & this is NOW: Sneak peek of my NEW VIDEO for #PARTOFME IN FULL EFFECT 3.21.12. RT!"
The footage shows a camouflaged Katy staring menacingly down the lens following a few quick underwater shots and training scenes.
The track will also feature in the singer's new repacked version of album 'Teenage Dream: The Complete Confection' and the single is set to make a challenge for this week's Vodafone Big Top 40.
You can view the trailer to Katy Perry's official music video 'Part Of Me' below: