Katy Perry has spent a fourth non-consecutive week atop the Irish singles chart.

The singer's global hit 'Roar' remains at number one, while Jason Derulo's 'Talk Dirty' debuts at number two.

Miley Cyrus climbs to three with 'Wrecking Ball', Birdy is new at four with 'Wings' and OneRepublic slide to five with 'Counting Stars'.

Avicii's 'You Make Me' starts at 10, while Britney Spears begins at 13 with her new single 'Work Bitch'.

Christina Perri's 'A Thousand Years' jumps from 68 to 14 with help from an X Factor outing, while Katy Perry's promotional track 'Dark Horse' lands at 22.

Arctic Monkeys are at 26 with 'Do I Wanna Know?', Arcade Fire slip to 30 with 'Reflektor' and Coldplay's 'Atlas' plummets from 12 to 50.

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This week's Irish Top 10 is as follows (click where possible for our reviews):

1. (1) Katy Perry: 'Roar'
2. (-) Jason Derulo: 'Talk Dirty'
3. (5) Miley Cyrus: 'Wrecking Ball'
4. (-) Birdy: 'Wings'
5. (3) OneRepublic: 'Counting Stars'
6. (2) Avicii: 'Wake Me Up'
7. (4) Ellie Goulding: 'Burn'
8. (6) Macklemore & Ryan Lewis: 'Same Love'
9. (7) Lana Del Rey: 'Summertime Sadness (Cedric Gervais Remix)'
10. (-) Avicii: 'You Make Me'

Watch the 'Roar' music video below: