CREATE TABLE table_6106 ("Celebrity" TEXT, "Known for" TEXT, "Entered" TEXT, "Exited" TEXT, "Finished" TEXT)

On which day did the person who is known for the only way is essex star enter?
SELECT "Entered" FROM table_6106 WHERE "Known for" = 'the only way is essex star'
SELECT "Entered" FROM "table_6106" WHERE "Known for" = 'the only way is essex star'