RiRi sparks pregnancy rumors with 'baby bump'

Rihanna has sparked pregnancy rumors after she was seen sporting a rounder-looking belly at a showbiz bash in LA.

According to the sources, the 'Umbrella' hitmaker, who was wearing a tight red dress at the Diamond Ball in Beverly Hills, the songs on her new album make reference to "the baby growing inside" her, the Daily Star reported.

The insiders added that she has put a blanket ban on anyone smoking marijuana in her recording studio, however some sources have rubbished the claims saying that the singer isn't pregnant.