Tie clip for necktie

A tie clip for fastening to a loose knot in a necktie, comprising:

• a shell, said shell comprising a flat body and two symmetrical wings turned backward and inward toward each other from two opposing sides of said body, said wings being spaced from each other by a gap and defining with said body a receiving space having a narrow bottom mouth for receiving the knot of the necktie, and
• a clip mounted in said shell for securing said shell to the knot of the necktie, said clip comprising a base frame fastened to said body of said shell inside said receiving space, said base frame comprising an upper clamping arm and at least one lower clamping arm, and a hook coupled to said upper clamping arm and said at least one lower clamping arm of said base frame, said hook turning between a first position where said shell is attached to the knot of the necktie, and a second position where said hook is hooked on the knot of the necktie to which said shell is attached;
• wherein
• said clip further comprises a stop plate mounted on said hook to block said gap between said wings when said hook is turned to said second position.