An antibody fragment that specifically binds human thymic stromal lymphopoietin (TSLP) selected from any one of the following: a) an antibody fragment that comprises: a heavy chain complementarity determining region 1 (HCDR1) comprising the amino acid sequence of SEQ ID NO: 4; a heavy chain complementarity determining region 2 (HCDR2) comprising the amino acid sequence of SEQ ID NO: 2; a heavy chain complementarity determining region 3 (HCDR3) comprising the amino acid sequence of SEQ ID NO: 3; a light chain complementarity determining region 1 (LCDR1) comprising the amino acid sequence of SEQ ID NO: 11; a light chain complementarity determining region 2 (LCDR2) comprising the amino acid sequence of SEQ ID NO: 12; and a light chain complementarity determining region 3 (LCDR3) comprising the amino acid sequence of SEQ ID NO: 13, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Kabat numbering scheme, and wherein the antibody fragment is a Fab; b) an antibody fragment that comprises: a HCDR1 comprising the amino acid sequence of SEQ ID NO: 5; a HCDR2 comprising the amino acid sequence of SEQ ID NO: 6; a HCDR3 comprising the amino acid sequence of SEQ ID NO: 3; a LCDR1 comprising the amino acid sequence of SEQ ID NO: 14; a LCDR2 comprising the amino acid sequence of SEQ ID NO: 15; and a LCDR3 comprising the amino acid sequence of SEQ ID NO: 16; wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Chothia numbering scheme, and wherein the antibody fragment is a Fab; c) an antibody fragment that comprises a HCDR1 comprising the amino acid sequence of SEQ ID NO: 1; a HCDR2 comprising the amino acid sequence of SEQ ID NO: 2; a HCDR3 comprising the amino acid sequence of SEQ ID NO: 3; a LCDR1 comprising the amino acid sequence of SEQ ID NO: 11; a LCDR2 comprising the amino acid sequence of SEQ ID NO: 12; and a LCDR3 comprising the amino acid sequence of SEQ ID NO: 13, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the combination of the Chothia and Kabat numbering schemes; and wherein the antibody fragment is a Fab. a) an antibody fragment that comprises: a heavy chain complementarity determining region 1 (HCDR1) comprising the amino acid sequence of SEQ ID NO: 4; a heavy chain complementarity determining region 2 (HCDR2) comprising the amino acid sequence of SEQ ID NO: 2; a heavy chain complementarity determining region 3 (HCDR3) comprising the amino acid sequence of SEQ ID NO: 3; a light chain complementarity determining region 1 (LCDR1) comprising the amino acid sequence of SEQ ID NO: 11; a light chain complementarity determining region 2 (LCDR2) comprising the amino acid sequence of SEQ ID NO: 12; and a light chain complementarity determining region 3 (LCDR3) comprising the amino acid sequence of SEQ ID NO: 13, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Kabat numbering scheme, and wherein the antibody fragment is a Fab; a heavy chain complementarity determining region 1 (HCDR1) comprising the amino acid sequence of SEQ ID NO: 4; a heavy chain complementarity determining region 2 (HCDR2) comprising the amino acid sequence of SEQ ID NO: 2; a heavy chain complementarity determining region 3 (HCDR3) comprising the amino acid sequence of SEQ ID NO: 3; a light chain complementarity determining region 1 (LCDR1) comprising the amino acid sequence of SEQ ID NO: 11; a light chain complementarity determining region 2 (LCDR2) comprising the amino acid sequence of SEQ ID NO: 12; and a light chain complementarity determining region 3 (LCDR3) comprising the amino acid sequence of SEQ ID NO: 13, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Kabat numbering scheme, and wherein the antibody fragment is a Fab; b) an antibody fragment that comprises: a HCDR1 comprising the amino acid sequence of SEQ ID NO: 5; a HCDR2 comprising the amino acid sequence of SEQ ID NO: 6; a HCDR3 comprising the amino acid sequence of SEQ ID NO: 3; a LCDR1 comprising the amino acid sequence of SEQ ID NO: 14; a LCDR2 comprising the amino acid sequence of SEQ ID NO: 15; and a LCDR3 comprising the amino acid sequence of SEQ ID NO: 16; wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Chothia numbering scheme, and wherein the antibody fragment is a Fab; a HCDR1 comprising the amino acid sequence of SEQ ID NO: 5; a HCDR2 comprising the amino acid sequence of SEQ ID NO: 6; a HCDR3 comprising the amino acid sequence of SEQ ID NO: 3; a LCDR1 comprising the amino acid sequence of SEQ ID NO: 14; a LCDR2 comprising the amino acid sequence of SEQ ID NO: 15; and a LCDR3 comprising the amino acid sequence of SEQ ID NO: 16; wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the Chothia numbering scheme, and wherein the antibody fragment is a Fab; c) an antibody fragment that comprises a HCDR1 comprising the amino acid sequence of SEQ ID NO: 1; a HCDR2 comprising the amino acid sequence of SEQ ID NO: 2; a HCDR3 comprising the amino acid sequence of SEQ ID NO: 3; a LCDR1 comprising the amino acid sequence of SEQ ID NO: 11; a LCDR2 comprising the amino acid sequence of SEQ ID NO: 12; and a LCDR3 comprising the amino acid sequence of SEQ ID NO: 13, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 are defined according to the combination of the Chothia and Kabat numbering schemes; and wherein the antibody fragment is a Fab.