Nicole Scherzinger sweetly sings for her 'niece' during 'precious' studio session in Portugal

Nicole Richie on if she would let children Harlow, 13, and Sparrow, 11, do a reality show

Nicole Richie Shares Her Thoughts About Her Kids Doing Reality TV

Nicole Richie on Whether She'd Let Her Kids Do Reality TV & New House of Harlow Collection (Exclusive)