Camryn Magness, known publicly as Camryn, is an American pop singer and actress from Denver, Colorado. She first gained attention through a series of YouTube videos she posted in 2010, which led to her first United States tour alongside Cody Simpson and Greyson Chance. Camryn then joined One Direction on their Up All Night Tour in 2011 and was also asked to rejoin One Direction for 63 sold-out shows on their 2013 Take Me Home Tour in Europe. In 2016, Camryn was direct support for Fifth Harmony on their European 7/27 Tour.

The Up All Night Tour was the first headlining concert tour by English-Irish boy band One Direction, in support of their debut studio album, Up All Night (2011). It began in December 2011 and was One Direction's first solo tour after being formed in the seventh series of The X Factor and being signed to Syco Records. The concert tour was announced in September 2011, with the initial dates for UK and Ireland being revealed. The tour eventually expanded to Oceania and North America, with the band playing 54 shows in total.