Where's the line between appreciation and appropriation?

Image | Valentino dress featuring designs from artist Christi Belcourt

Caption: Métis artist Christi Belcourt says Valentino's adaptation of 'Water Song' was respectfully done, with her consultation. (Valentino)

Navajo-print leggings. Suede moccasins. Feather earrings. Fashion designers often draw inspiration from aboriginal cultures — but the love doesn't always flow(external link) both ways.
One thing is clear: cultural appropriation is a thorny subject. It's not always easy to tell between the work of aboriginal artists and mass-produced imitations, or to draw the line between appreciation and appropriation.
For insight on this topic, guest host Candy Palmater checks in with two people:

Image | Christi Belcourt - Water Song

Caption: Christi Belcourt's Water Song (2012) is on display at the National Gallery of Canada. (christibelcourt.com)