The prices seem super low for what they offer, but, again, cheaper labor costs help to get you to that price point
Whether you want to go casual or formal, the choice is all yours
The Backless Strapless Plunge Bra would work with a dress like Style D2819 from Essense of Australia

3oz Pours of Each $32 (220 cal.) Red Wines Bordeaux Chteau Greysac, Mdoc 6oz $18 9oz $25 Cabernet Sauvignon Austin Hope, Paso Robles 6oz $40 9oz $58 Cabernet Sauvignon Beringer, Knights Valley 6oz $15 9oz $21 Cabernet Sauvignon Faust, "Liberation," Napa Valley 6oz $25 9oz $35 Cabernet Sauvignon Raymond, Primal Cut, North Coast 6oz $21 9oz $29 Malbec Via Cobos, "Felino," Mendoza 6oz $14 9oz $19 Merlot Duckhorn, Napa Valley 6oz $17 9oz $24 Pinot Noir Merry Edwards, "Cuve '78," Russian River Valley 6oz $22 9oz $31 Pinot Noir The Harrison, Willamette Valley 6oz $20 9oz $28 Pinot Noir Siduri, Santa Lucia Highlands 6oz $14 9oz $19 Red Blend Ferrari-Carano, "Siena," Sonoma County 6oz $14 9oz $19 Red Blend Jonata, "Todos," Ballard Canyon 6oz $22 9oz $31 Super Tuscan Modus, Tuscany 6oz $15 9oz $20 Tempranillo Marqus de Cceres, Reserva, Rioja 6oz $15 9oz $20 Legends of Napa Valley Red Wines Cabernet Sauvignon, Cakebread, Napa Valley 6oz $33 9oz $48 Cabernet Sauvignon, Caymus, Napa Valley 6oz $43 9oz $63 Cabernet Sauvignon, Duckhorn, Napa Valley 6oz $28 9oz $40 Cabernet Sauvignon, Freemark Abbey, Napa Valley 6oz $35 9oz $51 Cabernet Sauvignon, Heitz Cellar, Napa Valley 6oz $42 9oz $61 Cabernet Sauvignon, Louis M

Thats why this dress comes in two options our Regular and Longer lengths (see below for length specifics.) Team yours with: Pair 'Leoni' with sleek pointed-toe heels, a structured mini bag, and pearl or gold jewellery for a refined look
For more on where that line sits, our comparison of the difference between cocktail and evening looks is worth a read