a live performance by Irish contestants John and Edward Grimes, holding a pineapple on his head. He later apologised on Twitter. Harris claimed that Chris Brown's "Yeah 3x", released in October 2010, plagiarised his 2009 single "I'm Not Alone". After considering similarities between the two songs, Harris was subsequently added to the songwriting credits on the single and the F.A.M.E. album. Harris was also featured on Kylie Minogue's eleventh studio album, Aphrodite, collaborating the track "Too Much". 2011–2013: 18 Months and international prominence In 2011, Harris toured as a support act for the European leg of Barbadian singer Rihanna's Loud Tour. Rihanna was quoted as saying, "Calvin is the perfect fit for the Loud Tour. He is going to bring something unique and fun for the fans." Harris played the 2011 Mardi Gras Party in Sydney on 5 March. Harris was also featured on LMFAO's album Sorry for Party Rocking, appearing on the track "Reminds Me of You", which is based on Harris's own song "Awooga". Harris produced Tinchy Stryder's second single, "Off the Record", from his fourth studio album, Full Tank. The track had its premiere on 15 September 2011 and was released in the UK on 6 November 2011. Harris released the single "Bounce", the first single from his upcoming album, a collaboration with Kelis that debuted at number two on the UK Singles Chart in June 2011. "Feel So Close", the second single from the album, was released in August 2011 and also reached number two in the United Kingdom. "Feel So Close" became his first solo entry on the Billboard Hot 100 in the US, peaking at number 12. He performed at the 2011 Jingle Bell Ball concert and was announced as one of the headline acts at a number of Southern Hemisphere 2011/2012 new year music festivals. Following a stint as the support act on the Australian leg of Rihanna's tour, Harris produced Rihanna's songs "We Found Love" and "Where Have You Been". The former was included on Harris's upcoming album 18 Months and premiered on Capital FM radio in the UK on 22 September 2011. "We Found Love" topped the charts in 27 countries worldwide, including the UK where it became Harris's third UK number one, peaked in the top 10 in 30 countries, and broke many records worldwide. Topping the Billboard Hot 100 for 10 non-consecutive weeks, it was Harris's first US number