She puts the dress away and lays out the jewelry. (It's actually really tasteful for her norm - she'd made herself sad doing it, but she'd thought about splurging some of her mom's money on nice jewelry, and then thought to see if she had any family jewelry and found some of her mom's pieces that looked like they'd work. (Her mom had a lot of jewelry, though a good portion of it looked inherited.)) There's a complicated necklace with small blue gems woven in with chains, and a small mess of bracelets and bangles (most plain or patterned metal, some with gems, one is a broad bangle with ceramic panels, a few beaded ones), and some very nice hair sticks she's been practicing wearing occasionally, and some small barrettes. "I don't think I want to wear all the bracelets," she says, "But I liked them all, so went ahead and packed them... I'm attached to the necklace and hair sticks, though."
Makeup, as well - nail polish (deep blue and shimmery), eye shadow (multiple blues, also shimmery), and some more subtle foundation and blush and lipstick and eye stuff she was going to ask Fay for help putting on.
Shoes - only a very slight heel, a deep bronze color so she can wear them to things other than this. Tights - a dark, almost black blue, opaque (they'll show under her dress's hem, especially when she's moving).
Wand holster - should be nearly invisible under her skirt unless she's getting really acrobatic, she figured she'd bring it for completion's sake. (...She's also attached to this.) A purse - small on the outside, with a long strap so she can sling it over her shoulder, with a damask pattern in different shades of bronze. (She's unsure about bringing this, but it's kind of just generally useful and also pretty.)