Pop star Pink has broken her own record in Australia after lining up 18 shows at Melbourne's Rod Laver Arena.

The Trouble singer's The Truth About Love Tour opens Down Under on 25 June (13) and features 46 arena concerts.

More than a third of the gigs will be held at the 15,000-capacity arena in Melbourne thanks to what promoters are calling the "sustained unrelenting demand" for tickets.

The 18 shows at the 25-year-old arena, which culminate with a newly-added August (13) date, break the venue record Pink set on her 2009 Funhouse tour.