A tether clip suitable for use for attaching a garnish which houses a curtain airbag to a vehicle body, comprising: a seat portion and a body attachment portion extending orthogonally from one side of the seat portion; a tether portion that stands on the other side of the seat portion; an anchor portion that connects to one end portion of the tether portion that is opposite to the other end portion thereof that is closer to the seat portion than the one end portion; two engagement retention portions that are engageable with a garnish stopper hole of the garnish and are located at each of both sides of the tether portion and stand on the seat portion on the same side as the tether portion, the tether clip being fixable to a vehicle body side by means of the body attachment portion, and the tether portion, the engagement retention portions and the anchor portion being insertable through the garnish stopper hole; and an independence facilitation structure that is provided between the tether portion and each of the engagement retention portions and that is configured to facilitate movement of the engagement retention portions and movement of the tether portion independent of each other when the tether clip receives load in a first direction that is parallel to the seat portion and is orthogonal to a direction of a line that connects the engagement retention portions provided at both sides of the tether portion and is parallel to the seat portion, the anchor portion is provided, when the engagement retention portions are disengaged from the garnish stopper hole and then the garnish opens halfway, for coming into engagement with an edge portion of the garnish stopper hole so as to stop further opening movement of the garnish, wherein the independence facilitation structure includes (i) a clearance provided between the tether portion and distal end portions of the engagement retention portions, or (ii) a link portion that has a fragile portion configured to rupture when the tether clip receives a load, the link portion connecting the tether portion and the engagement retention portions. a seat portion and a body attachment portion extending orthogonally from one side of the seat portion; a tether portion that stands on the other side of the seat portion; an anchor portion that connects to one end portion of the tether portion that is opposite to the other end portion thereof that is closer to the seat portion than the one end portion; two engagement retention portions that are engageable with a garnish stopper hole of the garnish and are located at each of both sides of the tether portion and stand on the seat portion on the same side as the tether portion, the tether clip being fixable to a vehicle body side by means of the body attachment portion, and the tether portion, the engagement retention portions and the anchor portion being insertable through the garnish stopper hole; and an independence facilitation structure that is provided between the tether portion and each of the engagement retention portions and that is configured to facilitate movement of the engagement retention portions and movement of the tether portion independent of each other when the tether clip receives load in a first direction that is parallel to the seat portion and is orthogonal to a direction of a line that connects the engagement retention portions provided at both sides of the tether portion and is parallel to the seat portion, the anchor portion is provided, when the engagement retention portions are disengaged from the garnish stopper hole and then the garnish opens halfway, for coming into engagement with an edge portion of the garnish stopper hole so as to stop further opening movement of the garnish, wherein the independence facilitation structure includes (i) a clearance provided between the tether portion and distal end portions of the engagement retention portions, or (ii) a link portion that has a fragile portion configured to rupture when the tether clip receives a load, the link portion connecting the tether portion and the engagement retention portions.