This is manga tho but it's similar to what you're describing: http://www.mangago.me/read-manga/he_is_beautiful/
I just search for the tag 'model' and randomly pick manga that matches your description- sorry if it's wrong
http://www.mangago.me/read-manga/ijimekko_to_nakimushikun/
It's a manga with mny short stories and one storry has a tailor uke
http://www.mangago.me/read-manga/akari_o_otoshita_ato_de/
^many
^story
It's about a suit tailor (?) uke and a model seme