October onwards saw a total of five releases from Minogue; first, on 29 October, reissues of her 1997 and 2003 albums Girl and Neon Nights, each containing a double-disc, the second disc of which includes remixes. On 5 November, she released Unleashed, a collection of previously unheard material from her time with London Records, and The Video Collection, which includes every one of her music videos as well as bonus features. Dannii's fifth studio album Club Disco was released on the same date and in May 2008 in Australia, featuring several previously released singles, such as "You Won't Forget About Me", "Perfection" and "So Under Pressure", cancelled single "I Can't Sleep at Night" and covers of "Xanadu" and the disco classic "He's the Greatest Dancer". Finally, on 3 December, a new single was released, entitled "Touch Me Like That" which peaked at number one on the UK Dance Chart.
In early 2008, Minogue was hired as the headline performer at Australian Fashion Week. In particular she was booked to make an appearance as the opening party hosted by MAC Cosmetics. She also released Club Disco as a double album in Australia with some changes to the track listing. At the start of 2009, a digital compilation album, "The Early Years", was released online that featured songs from Minogue's first two studio albums.
Throughout the fifth series, several people in the entertainment industry, including Ronan Keating, Noel Gallagher and Graham Norton questioned Minogue's judging credentials and mentoring ability. On 22 November 2008, during a live broadcast of the programme, Minogue broke down in tears and was unable to introduce one of her acts, Rachel Hylton, following an on-air row with Louis Walsh over a choice of song. Despite the controversies, she proved popular in public votes and polls. Minogue later stated that she did not enjoy her experience on the fifth series and "would never want to go through that again". Minogue returned for the sixth series in 2009. She chose Rachel Adedeji, Lucie Jones and Stacey Solomon as her final three acts to compete in the live shows and was assisted at the judges' houses stage by her older sister, Kylie Minogue. Despite losing Adedeji in week 4 and Jones the following week, Solomon went on to advance into the final and ultimately finish in third place. In 2010, Minogue was pregnant. She later stated that, as her baby's expected arrival in July would clash with filming for The X Factor audition dates, she would be unable to judge in the audition episodes for the seventh series. Minogue returned during the judges' houses stage, selecting Nicolo Festa, Matt Cardle and Aiden Grimshaw as her final three, with Paije Richardson as her wildcard act. Minogue was assisted by fellow Australian and friend Natalie Imbruglia who was a guest judge in the Birmingham auditions that year filling in for Minogue. Cardle was her only act to make it into the final and eventually won, with Minogue becoming the winning mentor for the second time.
In August 2008, Minogue began dating English model and ex-professional rugby league player Kris Smith (born 20 August 1978). They met in Ibiza, where Smith was celebrating his 30th birthday. It was announced on 9 January 2010 that Minogue was pregnant; the news was revealed after receiving her 12-week scan. Minogue gave birth via caesarean section to an 8 lb 3oz/4 kg boy, Ethan Edward Minogue-Smith, at Royal Women's Hospital in Melbourne, Australia on 5 July 2010. She had previously planned for a home birth. In April 2012, Minogue announced on Twitter that she and Smith had separated.