tˈɑːpstɪtʃɪŋ ɪz jˈuːzd mˈoʊst ˈɔfən ˌɔn ɡˈɑːɹmənt ˈɛdʒᵻz sˈʌtʃ ɐz nˈɛklaɪnz ænd hˈɛmz, wˌɛɹ ɪt hˈɛlps fˈeɪsɪŋz tə stˈeɪ ɪn plˈeɪs ænd ɡˈɪvz ɐ kɹˈɪsp ˈɛdʒ.
Topstitching is used most often on garment edges such as necklines and hems, where it helps facings to stay in place and gives a crisp edge.