What a lucky young lady that Eleanor Calder is, eh?

Not only is she going out with one of the cutest boybanders in the history of the world, but she also got a personal rendition of that classic tune Happy Birthday from the incredible Rihanna.

Yesterday was Eleanor’s 20th birthday and like the rest of us she was probably just hoping people would actually remember it was her special day – maybe a box of Celebrations or an Impulse gift set would have been a bonus, but we’re guessing she wasn’t expecting a personal video from the Where Have You Been singer.

How did Louis pull this one off?

Rihanna, who’s currently taking some time out from her busy schedule and jetted off to Sardinia for a well-deserved break, can be seen singing into a camera on a fancy yacht.

Not only did Eleanor get this musical treat, she also got a very extravagant birthday cake from her boyfriend and her own brand of tea, which she posted a picture of on her Twitter, saying: “Birthday tea :)”

Louis and Eleanor

Louis and Eleanor started dating in September after a friend of Louis’ bandmate Harry Styles set them up.

But it’s not all been happy birthdays and fun times since they started courting – Eleanor’s had to put up with a lot of nastiness from Louis’ dedicated fans.

She’s faced a barrage of seriously mean messages from trolls on Twitter, and some even sent pictures of Louis’ ex-girlfriend Hannah Walker to her and #Louannah started trending.

Louis tweeted one follower who was being a nasty piece of work saying: “Truth of the matter is its actually not funny in the slightest. I'm reading through some horrible tweets very p***** off!”

He then tweeted Eleanor saying: “Can't wait to see you. Love YOU!!”

To which she replied, “And tomorrow is now today! :) Love yoouuu xxxx”

Good for them!