Exact Items
SBNY Leather Flower Headband : $78.00
Similar Items
Forever 21 Pearl Flower Necklace : $12.80
Forever 21 'April' Floral Necklace : $6.80
Forever 21 Black Flower Headband : $4.80

Exact Items
Phoebe Couture Ruffle Zipper Dress (Only Available in Blue) : $290.00
SBNY Collection Bow Headband (Available in Other Colors) : $16.00
Similar Items
Maggy London Pink Ruffle Dress : $150.00
Forever 21 Pink Satin Dress : $13.50
Charlotte Russe Black Satin Bow Headband : $2.99

Exact Items
Phoebe Couture Origami Dress (Only Available in Blue) : $300.00
Similar Items
Phoebe Couture Pink Dress : $320.00
Alloy Pink Satin Dress : $19.99
Kohl's Diamond Chain Necklace : $250.00

Exact Items
Marchesa Gown
(Featured in previous post)
Robert Rose Necklace (Unavailable)
Noir Ring (Unavailable
The tiara Blair is wearing was probably created by Eric Daman.
Similar Items
Marissa Collections Cocktail Ring : $3,000.00
AZ Collection Amber Chain Necklace : $186.00
Jennifer Ouellette Metal Flower Barrette : $115.00
Jennifer Ouellette Velvet Berries Headband : $55.00
Blu Bijoux Crystal Ring : $48.00

Exact Items
Phoebe Couture Dress
Similar Items
Maggy London Pink Chiffon Dress : $150.00

I'll update this post as soon as I find better pictures of Penelope's dress and jewelry.

Exact Items
Marchesa Black Feather Gown (One of a Kind)
Dior Chiffon Gown : $19, 650.00

I think Serena's dress is the same as pictured but in a different color. I'm not sure where you can currently buy it.