Do you lose your stars when you go to jail in Monopoly?

No, one does not lose stars when going to jail in Monopoly because the game does not utilize a star system. In Monopoly, when a player goes to jail, they are simply confined to the Jail space on the game board and cannot move around the board to collect rents or purchase properties until they are released. They have three options for getting out of jail: paying a $50 fine before rolling the dice on either of their next two turns, using a "Get Out of Jail Free" card if they have one, or rolling doubles on the dice. If they fail to roll doubles after three turns, they must pay the $50 fine and then move according to the roll. Going to jail does not affect any assets or properties that player owns; those remain in possession of the jailed player, who can still collect rent on them unless the rules have been otherwise modified by agreement among players.