The 'Pack Up' star became the first act to stream a live performance via the social networking site in the UK. The gig took place at Ronnie Scott's jazz club in Soho, London.
The singer admitted that the event was odd as there was no audience to react to, telling The Mirror: "It was strange performing without any faces looking back at me."
The show was set up in collaboration with the Carphone Warehouse and saw the 23-year-old perform a variety of her hits including 'Skinny Genes', 'Rollerblades' and 'Mr Medicine'.
Doolittle recently admitted that she thinks "the CD is over".
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Watch the video for 'Pack Up' by Eliza Doolittle below: