Rumours are rife that singers Beyonce and Jay Z are expecting their second child -- after the latter reportedly changed his song lyrics in Paris.

Jay Z hinted that his wife was pregnant while singing the song `Beach Is Better` during their performance at the `On The Run" tour in Paris`, reports femalefirst.co.uk.

The 32-year-old rapper reportedly changed the lyrics to say: "Cause she's pregnant with another one."

The couple, who married in 2008, already has a two-year-old daughter, Blue Ivy.

Rumours that Beyonce was pregnant have been circulating for some weeks.