According to Daily Mail, the MTV VJ will be one of many familiar faces to appear on the 2021 season.
Hollywood Treatment understands Big Brother is likely to air in April.
Lillian, 26, was seen chatting to host Sonia Kruger before making her way into the newly renovated Big Brother home on Monday.
The upcoming season will feature plenty of shocking twists – with three housemates scheudled to be eliminated within the first week.
Stay linked to Hollywood Treatment for the latest on Big Brother 2021.