Abstract: A wastebasket with a removable collar adapted to fit snugly on the top of the wastebasket to hold a disposable liner bag in place while hiding from sight the portion of the liner bag extending beyond the wastebasket rim. The collar has a lower, preferably flared portion around the outside of the collar. When the collar is in place, the lower portion defines a retention space within the collar and external to the wastebasket for permitting an upper portion of the bag to be tucked in so as to hide it from view and improve the external appearance of the wastebasket. In another embodiment, the collar is also adjustable to fit wastebaskets of varying sizes and shapes. The invention also includes the collar itself, which may be purchased and used separately.