A Top 10 hit in the US, it only reached Number 42 on UK shores, but nonetheless has shifted an impression 496,000 chart sales to date. The first link-up between Shawn and future squeeze Camila, I Know What You Did Last Summer was somewhat of a controversial hit in 2015, given that it was the first solo material Camila released before her split from girl group Fifth Harmony in 2016. I Know What You Did Last Summer (with Camila Cabello) (2016) Helped along by an electro re-swizz from Zedd, Lost In Japan - the second single from his 2018 self-titled album - clocks in with a combined sales total of 483,000 and has been streamed in the UK over 58 million times. The song peaked at Number 20 on the UK singles chart and has notched up 295,000 chart sales to date. The title track from Shawn's most recent album is a modern power ballad, addressing toxic masculinity whilst broadening his musical horizons into widescreen electronic-pop. Despite only reaching Number 99 on the Official Singles Chart, it's endured over the years as more people discovered him, notching up 284,000 chart sales to date - not bad. Shawn's debut single may now live in the shadow of mega-hit Stitches, but it got his career off to an auspicious start. An honourable mention: Life Of The Party (2014) Now armed with a string of hit singles, below we count down the Canadian hitmaker's Top 10 (and one honourable mention) biggest hits on the Official UK Chart - including two Number 1s and four singles with over one million chart sales. Shawn's chart dominance looks set to continue, too, with the release of his fourth studio album Wonder. It's a template taken on by other influencers looking to take on the charts - from YouTuber KSI to TikTok-er Dixie D'Amelio. In just seven years, Shawn Mendes has managed to bridge the gap between social media sensation and actual pop superstar - and made the transition feel like a breeze.