'The Simple Life' star Nicole Richie is set to address recent rumours about her in an interview with television show host Diane Sawyer.
Richie has remained tight-lipped since US media reports suggested that she is now pregnant.
The star is also expected to speak about her impending trial, related to charges of driving while under the influence, and rumours that she is set to marry Good Charlotte singer Joel Madden.
The interview is expected to be aired next Thursday and Friday in the US, on both 'Good Morning America' and '20/20'.
