Katy Perry knocks Pearl Jam over the top spot to debut at No 1 with her new album, Prism, while over on the singles chart, Lorde is back up where she belongs with the desolate beauty of Royals.

Rising Irish star Lisa O'Neill debuts at No 14 with her second album Same Cloth Or Not and could the game be up for Gaga? She limps into the top 10 with her new single, Do What U Want.

Ireland's Top 20 singles

2 (last week) 1 (this week) Royals Lorde (Lava/Republic)

3  2 Take Me To Church Hozier (Rubyworks)

1 3  Wings Birdy (14th Floor Records)

6 4 Roar Katy Perry (Virgin)

5 5 Wrecking Ball Miley Cyrus (Rca)

4 6 Counting Stars Onerepublic (Interscope)

8 7 Hold On, We're Going Home Drake Feat. Majid Jordan             (Cash Money)

12 8 Wake Me Up Avicii (Positiva)

Do What U Want Lady Gaga Feat. R. Kelly(Streamline/Interscope/Konlive)

11 10 Burn Ellie Goulding (Polydor)

26 11 I Won't Give Up Jason Mraz (Atlantic)

12 You're Nobody 'Til Somebody Loves You James Arthur     (Syco Music)

7 13 Talk Dirty Jason Derulo Feat. 2 Chainz (Warner Bros)

10 14 You Make Me Avicii (Prmd)

9 15 Summertime Sadness Lana Del Rey (Polydor)

15 16 The Fox Ylvis (Parlophone)

13 17 Bonfire Heart James Blunt (Atlantic)

19 18 Timber Pitbull Feat. Ke$Ha (Rca)

19 Beautiful Life Union J (Rca)

20 All Night Icona Pop (Atlantic)

Ireland's Top 20 albums

1 Prism Katy Perry (Virgin)

1 (last week) 2 (this week) Lightning Bolt Pearl Jam             (Monkeywrench)

2 3 Am Arctic Monkeys (Domino)

4 4 In A Perfect World Kodaline (B-Unique)

5 Moon Landing James Blunt (Atlantic)

6 6 Our Version Of Events Emeli Sandé (Virgin)

13 7 Halcyon/Halcyon Days Ellie Goulding (Polydor)

3 8 Bangerz Miley Cyrus (Rca)

5 9 Mechanical Bull Kings Of Leon (Rca)

9 10 Up All Night One Direction (Syco Music)

7 11 Fire Within Birdy (14th Floor Records)

11 12 All The Little Lights Passenger (Nettwerk)

10 13 Friends For Life High Kings (Sony Classical)

14 Same Cloth Or Not Lisa O'Neill (Song Seeds)

8 15 Tribute John Newman (Island)

14 16 Take Me Home One Direction (Syco Music)

12 17 New Paul Mccartney (Hear Music)

18 The Lumineers The Lumineers (Decca)

20 19 Born To Die Lana Del Rey (Polydor)

23 20 Bad Moon Rising - The Collection Creedence Clearwater Revival (Spectrum)

Chart courtesy of IRMA