Well, since no one else is going to step up ... I'm game for 'bad news'
By definition, Huskies can be virtually any color or combination (except merle) but most seem to follow one of several patterns. If you take a look at this link where they have 'samples' of different colours and patterns, you'll see what I mean, I think.
Personally your sister's little cutie looks somewhat like a cross between, possibly, a Rottweiler and a Husky (maybe?) The biggest problem is that a young puppy looks like a young puppy - it isn't till they've hit at least a couple of months old that they really start to develop breed specific characteristics.
He looks like an alert, intelligent little pup and whatever (s)he is I bet he'll bring someone a lot of fun!!!
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“Properly trained, a man can be dog’s best friend.”
Corey Ford .