But although it won, it's pretty bad news for Big Brother.
Love Island launched to 1.25 million viewers for its third season last night on ITV2, airing between 9PM and 10:30PM, almost twice the figure of 2016's opener.
It was the most watched start to the series so far, which began with 700,000 viewers last year and around 400,000 in 2015.
Big Brother on the other hand averaged 1.32 million viewers for its launch between 8:30PM and 10:30PM.
Although just beating Love Island, it was Big Brother's lowest ever launch show and down 200,000 viewers on last year.
Big Brother launch night ratings
Since move to Channel 5
BB12/2011 2.6 million (C5+1 not on air)
BB13/2012 2.7 million
BB14/2013 2.1 million
BB15/2014 2.1 million
BB16/2015 1.8 million
BB17/2016 1.5 million
BB18/2017 1.3 million
Fortunately for fans of both shows, future clashes between the two programmes are set to be avoided most nights.
Big Brother continues nightly on Channel 5 with the first highlights show this evening at 10PM.
Love Island continues nightly on ITV2 at 9PM.
However the two will face off again on Friday when Big Brother airs its next live show from 9PM on Channel 5.
Meanwhile, Love Island will launch its new spin-off show on Sunday night, live at 10PM on ITV2.