The mother of the bride, 47, wore an elegant black long-sleeve dress with velvet panels, while Keough’s grandmother Priscilla, 69, sported a green knit top with a knee-length skirt and black pumps.

The gown, with long sleeves and a turtleneck and glazed in white sequins, was listed at $8,000. Ms. Novak offered $6,000. The seller politely declined. Ms. Novak, 32, didn’t push back.

Considering the bride's fine taste, you better believe her wedding dress was one for the books. Margherita wore a stunning long-sleeved wedding gown that skimmed the ground.

After tying the knot with her husband – Maroon 5 guitarist James Valentine – in a low-key ceremony with just the two of them, Novak had another vintage dress up her sleeve for the wedding party the ...