tlc--what not to wear and hugs

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has anyone else noticed that sometimes nick (hairdresser) and carmindy (make-up artist) will hug the participant and sometimes they don't? they either both give the person a hug, or they both don't give the person a hug. do you think that they ask the person ahead of time if they like to hug or not? do you think that stacy and clinton talk smack about the difficult people and this gives nick and carmindy a reason not to hug them? i don't think the hugs are edited out because you see them say bye and just walk away. just wondering what is up with this.