Lady GaGa performs at the Isle of MTV music concert in Floriana, outside Valletta, June 25, 2008.[Agencies]

LONDON - U.S. glam diva Lady Gaga took top spot in Britain's singles pop charts Sunday, emulating the success of her debut release.

The 23-year-old New Yorker's "Poker Face" jumped three places to replace the Comic Relief charity single "Islands in the Stream" at the top, the Official UK Charts Company said. Lady Gaga hit No. 1 earlier this year with her Grammy-nominated single "Just Dance."

Flo Rida's "Right Round" featuring Kesha held at No. 2, ahead of "Islands in the Stream," a reworking of the 1980s Dolly Parton and Kenny Rogers hit, featuring Welsh singer Tom Jones and the song's co-writer Robin Gibb from the Bee Gees.

British girl group The Saturdays slipped one to No. 4 with "Just Can't Get Enough" while American country-pop singer Taylor Swift remained at No. 5 with "Love Story."

In the album charts, Ronan Keating, a member of Irish boy band Boyzone, debuted at No. 1 with his latest solo release "Songs For My Mother."

Annie Lennox stayed second with "The Collection" while American rockers Kings of Leon climbed back to third with "Only By The Night" which has now enjoyed 26 weeks in the charts.