Pop star Justin Bieber has been named America's Most-Searched Person of 2011.

Bosses at web engine Google have compiled a list of the most popular people, and this year the Baby hit-maker has been crowned the king of cyberspace.

Kim Kardashian has come in second and Born This Way singer Lady Gaga is third.

Nicki Minaj and Florida mother Casey Anthony, who was acquitted of killing her baby daughter Caylee earlier this year, round out the top five.

Kardashian also claimed the title of having the most-searched wedding after tying the knot with basketball star Kris Humphries in August.

She beat out Nick Lachey and Vanessa Minnillo's nuptials and Prince William and Catherine, Duchess of Cambridge's royal wedding in April.