I can't remember the scene, so don't know if the 'dagger' was more of a 'dague' or a 'poignard'.

I always think that 'replete with' is incorrect usage in this sort of context, but I may be wrong on that point; at any rate, I think one needs to understand it as 'complete with'.

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Note added at 1 hr (2013-12-01 12:25:04 GMT)
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Here are the relevant definitions of 'replete' from NS OED:

A1 Filled or abundantly supplied with ... a thing or things
2 Filled to satisfaction with ... food or drink; gorged, sated.

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Note added at 2 hrs (2013-12-01 13:12:07 GMT)
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Asker:

Following directly on from 'knife belt' as it does, I can only read 'replete with dagger' as referring to the belt; it seems incoceivable to me that it might qualify a following noun — however 'replete' Ms Andress' bikini might be in other ways!

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Note added at 2 hrs (2013-12-01 13:13:55 GMT)
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In terms of the bikini, I do think both definitons 1 and 2 might apply.

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Note added at 2 hrs (2013-12-01 13:17:22 GMT)
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To me, the word order is wrong if it were intended to refer to Ms Andress; if the 'knife belt' and 'dagger' had not been closely connected items (and as born out byt the scene from the film), then perhaps there might have been some argument for dissociating them; but in terms of word order, I'd have expected: "Sporting a knife belt and replete with lunch, Ursula Andress ..." or "Sporting a knife belt, Ursula Andress, replete with lunch ..."

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Note added at 20 hrs (2013-12-02 07:42:45 GMT)
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This issue of 'replete with' is an interesteing one, and I cannot justify it any better than by claiming it is a matter of native-speaker 'feeling'; to me, 'replete' (as borne out by the OED definitions) conveys a similar notion to 'brimming with' — there is some notion of a recipient and some kind of contents, be it even figurative. So one might say someone was 'brimming with enthusiasm' or that the glass was 'brimming with fine wine' — here, the idea of 'full to the brim' is clear, and it is often used with a positive connotation.
I believe the similarity with 'replete' is quite a good one (and cf. the literal translation 'repu' in FR), and I cannot conceive how a kife belt can be said to be 'brimming' with anything; one might, of course, talk about an enemy spaceship 'bristling with' weapons — but that's a different image.
I maintain my assertion that in this particular instance, the writer simply made a mistake (and it's a common-enough mistake even among native speakers of EN) in trying to be clever and use 'replete' instead of 'complete'.