Ella hung out with Pharrell after performing on NBC's talent show, which Pharell is a judge on.
During her visit to the studios, Ella also grabbed a photo with judge and No Doubt star Gwen Stefani. It looks like Ella was getting pretty comfortable in her new surroundings too, as she posed in the famous red spinning chair.
Sharing a photo of herself and Pharrell, Ella said: "All about the music.. Pleasure to finally meet Mr Unique... That is @pharrell xx. E #WeAreFire."
Last month, Ella was one happy girl after Pharrell praised her debut Number One album Chapter One.
'Happy' singer Pharrell tweeted songstress Ella about her top 10 hit 'Glow', saying it was a "masterfully written song".
And now that they've finally met each other, we sense a definite collaboration on the cards!
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Watch Ella's music video for 'Ghost' below: