Appropriate for a Formal Cocktail Attire wedding?

Too much? Too little? I haven’t been to a wedding in ages, and I’ll be about 20 weeks pregnant. This is the one slightly more formal dress I already own. I’m hoping to disguise the awkward bump/just-big-around-the-belly stage.

Too much of a deep v??

Too white?

Bride said to buy it but I'm overthinking because of some comments I've read

Black tie optional?

Long time listener, first time caller. Is this appropriate for black tie optional? Not necessarily the color, but the cut and material. Keep in mind I am 5 feet so this may (almost) touch the floor on me.

[Homemade] Thai Red Curry

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[i ate] NYC thin crust pizza

[Homemade] Pepperoni, Black Olive, Basil pizza.

[Homemade] Mint chocolate chip gelato w toasted walnuts / Mandarin sorbet w meringue & freeze dried raspberries

[homemade] Braised Beef Tendon and Dumplings