<P> Lynne is the eldest of the Slater sisters and she arrives in Albert Square in 2000 with her family : father Charlie ( Derek Martin ) ; sisters Kat ( Jessie Wallace ) , Little Mo ( Kacey Ainsworth ) and Zoe ( Michelle Ryan ) , and grandmother Mo ( Laila Morse ) . Unlike Little Mo and Zoe , Lynne is aware that Zoe is in fact Kat 's daughter and helps keep the family secret until Kat reveals the truth to Zoe . </P>
who was kat slater 's sisters in eastenders
Lynne Little Mo