Kylie Minogue has rescheduled two U.K. concerts which the Aussie pop singer had postponed due to illness.

The dates pulled at the Manchester Evening News Arena - tonight (Jan. 15) and tomorrow (Jan. 16) - will be rescheduled to Jan. 21 and Jan. 22, respectively. The performances will mark the third and fourth of Minogue's six-night residency at the M.E.N. Arena which, with a seating capacity of roughly 19,500-22,000, is one of Britain's largest indoor venues.

Minogue has been suffering with a "moderately severe respiratory tract infection," according to a spokesperson, and was unable to finish her concert on Saturday. According to a statement posted on her official Web site, doctors have advised Minogue to "not perform in the immediate future". It is unclear whether the Jan. 13 gig will be rescheduled.

Minogue, who is on the comeback trail after being diagnosed with breast cancer in 2005, is in record-breaking form. She recently sold out her seven-date run at London's Wembley Arena, overtaking Madonna and Gloria Estefan to become the fourth best-selling female artist in the venue's history with 14 dates. Whitney Houston leads the list with 29 dates.