The V necklace with a bridal dress creates a short pale line at the neck centre. The long gown has a shaped off-shoulder upper edge, a densely decorated bodice and broad floral arm sections. Both hands hold the skirt at the sides. Hair is worn back and a smaller ear ornament is visible, while the necklace supplies the clearest central jewellery accent.
Compare that position with the long side drops in the first reference. You do not have to rule out either arrangement in advance. Try your intended necklace alone first, then add the earring pair you actually plan to wear. Assess the whole head-and-shoulder area rather than judging both pieces independently in close-ups.
The broad patterned arm decoration already provides a visible setting. Check the necklace position on the worn gown and keep it reasonably consistent during earring comparisons. You can then decide whether you enjoy the central V line or a different earring length. Establish composition and closure through the actual jewellery information; pale colour in the photograph does not supply those product details.