Yesterday, it was announced the 28-year-old had managed to knock Mark Ronson and Bruno Mars off the top spot, after their song 'Uptown Funk' had topped the charts for seven weeks running.
On hearing about her single's success, Ellie told fans she was "so unbelievable happy".
Taking to Twitter last night, the 'Burn' singer wrote: "So unbelievably happy my song has gone in at No1 on iTunes. That's just madness.... Thank you x."
So unbelievably happy my song has gone in at No1 on iTunes. That's just madness.... Thank you x— Ellie Goulding (@elliegoulding) February 1, 2015
Last week during an appearance on Radio 1, Ellie told host Nick Grimshaw she wasn't sure how 'Love Me Like You Do' was going to be received.
Reassuring the blonde beauty the track was a good'un, Nick told her it may even be the "best Ellie Goulding song yet".
Well, her fans clearly thought so!
'Love Me Like You Do' features on the soundtrack of the hotly anticipated movie Fifty Shades of Grey, set for release this Valentine's Day.
Promoting her single, Ellie revealed 'Love Me Like You Do' was made exclusively for the film and producers had shown her the exact clip her song would be used for.
Making sure she didn't give too much away, Ellie only hinted the scenes given to her were not that raunchy compared to some.
But does her video spill the beans?!
Ellie recently unveiled the video to 'Love Me Like You Do' and it features previously unseen bits from Fifty Shades.
Treating us to exclusive footage of Jamie Dornan and Dakota Johnson in action as Christian Grey and Ana Steele. Fans see the pair taking a romantic stroll through a forest, before Christian then roughly pushes Ana onto the sofa so he can kiss her.
And if Ellie's vid isn't enough to get us all itching to see the real thing, another teaser trailer was released during yesterday's Superbowl.
Let the two week countdown begin...
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Watch Ellie Goulding's video for 'Love Me Like You Do' here: