Gisele did it better - I think with that Vogue cover and a shoot by Solve Sundsbo, and at the time I recall both got a lot of backlash. Isabeli's cover is just a blatant and lazy facsimile of 90's era fashion photography.
I suppose Sara's cover is better. It's in colour for starters, there's a natural mood. Both aspects often lost on this magazine's covers.