The reality star's daughter Kara revealed that Keough, 70, had been battling cancer in a GoFundMe page requesting donations to help cover her treatments.
Riley Keough emerged for her first public sighting since becoming embroiled in a swirl of sensational, and firmly disputed, claims involving the Presley family and John Travolta.
The baby was first spied in the 36-year-old actress' arms in late August. Now her rep has confirmed to PageSix on Wednesday morning that the Daisy Jones & The Six star has indeed added to her family.
Riley Keough left fans scratching their heads this week when she was spotted carrying a baby as she and her family left Venice's Marco Polo Airport on Friday.
Helen Keough noticed a new ulcer had appeared underneath her tongue in summer last year. The 44-year-old project manager believed the painful sore was caused by being 'busy and run down'.