Very unlikely. I mean
spoilers:end of spoilers
Both girls have the best of their parents (Peter's powers and sense of responsability and Mary Jane's beauty and personality), but they are not going to make them in any case become "clones" of their mother. Besides, they wouldn't wear the very same outfit as their father (even although Mayday did it for a short time) because their suits represent they are from a new Generation and reflect their different personalities. Mary Jane wearing's Peter outfit to honor his memory? That's more likely, but eventually she would change it into her own style. I mean, come on, she's a girl with personal style, so she won't simply wear her boyfriend's old outfit.
Mary Jane has a serious crush on Captain America, right? I'm not crazy, right? I distinctly remember her going "oh yeah" while looking at him and Peter chastising her, and another where Cap shows her a photo of him and she goes "A naked photo?" "Of course not!" "Darn."
I think you're stretching a "serious crush" on the above "evidence" LordUltimus..MJ is just having a laugh with Cap here...
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