Cindy Williams - who portrayed the titular character Shirley Feeney in iconic 1970s sitcom Lavern & Shirley - has died aged 75.The talented actress - who starred alongside Penny Marshall on all six seasons of the legendary ABC series - passed away after a brief illness, according to AP.Her children Zak and Emily Hudson released a statement released through family spokeswoman Liza Cranis. Illness: The actress - best known for her role as Shirley Feeney on the hit sitcom Laverne & Shirley - passed away at 75 years of age after a brief illness, according to AP 'The passing of our kind, hilarious mother, Cindy Williams, has brought us insurmountable sadness that could never truly be expressed,' the statement began. 'Knowing and loving her has been our joy and privilege.