thrill (one) to pieces
To cause someone to feel a great deal of excitement, joy, or pleasure. Often used in passive constructions. I have to say, seeing the Eiffel Tower in person thrilled me to pieces. A: "I really hope Mary enjoys her surprise birthday party." B: "I'm sure she'll be thrilled to pieces!"
thrilled to pieces
Ecstatic; very pleased and excited. A: "I really hope Mary enjoyed her surprise birthday party." B: "I'm sure she did; she seemed thrilled to pieces!" I was thrilled to pieces to hear that I'd been selected for a literary award in New York City.
thrill someone to pieces
and thrill someone to death; thrill someone to bitsFig. to please or excite someone very much. John sent flowers to Ann and thrilled her to pieces. Your wonderful comments thrilled me to death.
thrill to pieces
Also, thrill to death. Give great pleasure, delight, as in I was just thrilled to pieces with our new grandson, or He was thrilled to death when he first saw the Himalayas. Both of these hyperbolic terms use thrill in the sense of "affect with sudden emotion," a usage dating from the late 1500s. Also see tickled pink.