'Still in my 20s!': Rihanna shares sultry bra-free Instagram after donning 'I hate Rihanna' t-shirt on eve of 30th birthday

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Rihanna's 30th birthday is tomorrow, so she decided to celebrate the final day of her twenties with a flirty snap of herself on Instagram Monday.

The Barbadian beauty went bra-free while wearing a slinky spaghetti strap top, pouting cherry red lips, and telling the camera: 'Still in my 20s!'

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