Three ways I borrow from Mod, West African prints, and old Hollywood without looking like I'm in costume.
Mod brooch, modern rules

I keep one 1960s-style enamel brooch in my dresser like a shortcut to looking intentional on a day when I'm wearing basically nothing: a black knit top, straight-leg jeans, and boots. The mistake people make with Mod references is piling on the signals. If you add a bold liner eye, a shift dress, white boots, and a graphic pin, you tip into dress-up. The brooch works best when it's the only crisp, graphic thing in the whole outfit.
Here's how I place it so it feels styled, not random: I pin it high on the shoulder seam of a crewneck or mock neck, about two fingers in from where the sleeve meets the body. Center chest reads like "gift shop badge" to me, and lapel placement can look like you're impersonating a blazer you aren't wearing. On a cardigan, I like it at the throat, but only if the knit is tight enough that the pin doesn't sag by noon. If the fabric is drapey, I'll pin through the placket and the top layer only, then use a tiny felt circle behind it as a backing so the weight doesn't pucker the knit.
Color matters more than the motif. If the brooch is high-contrast (black/white, primary red, hard navy), I keep the rest of the look in solids and let my bag hardware pick up the metal tone so nothing fights. If it's gold-tone, I want a belt buckle or a watch in the same family. Not matching, just not arguing. The whole point of borrowing from Mod is that sharp, edited feeling, like you meant to stop at one statement and then stop.
Ankara print, but make it feel like 2026

I learned the hard way that wearing West African wax print like it's just another loud floral is how you end up feeling overdone the second you catch your reflection in a window. The cultural reference is the point, so I treat it with the same respect I'd give a family photo: I don't bury it under a bunch of other noise. My go-to piece is a structured Ankara skirt (or wide-leg trousers if I'm feeling brave), and I build the whole outfit by repeating exactly one color from the print in a boring place.
By boring place, I mean: socks, a thin turtleneck, a simple tank, or even a leather belt. If the print has a tiny hit of cobalt, I'll wear a cobalt sock with loafers and keep everything else black and cream. That one repeat makes the look feel intentional in the way street style looks intentional, not like "I bought a fun skirt." It also keeps me from doing the thing where I try to match the brightest color and accidentally make the whole outfit shout.
Texture is where this gets good. Wax print has a crispness, so I pair it with materials that have their own voice but not their own pattern: ribbed cotton, brushed wool, smooth leather. If I'm layering jewelry, I stick to one sculptural item, like a chunky cuff or a collar-style necklace, and I make sure it sits on solid fabric, not on top of the print. On pattern, metal can look busy and cheap fast, even when it isn't.
One practical note from wearing this out in real life: these fabrics can be stiff, and a waistband that fits at 9 a.m. might feel different after a big lunch. I like a skirt with a little ease, and I choose tops I can half-tuck without creating a weird lump. When it works, you get that confident, saturated color story that reads cultural and current at the same time, which is exactly why I reach for it.
Opera gloves without the costume vibes

Opera gloves are my favorite old-Hollywood nod because they change how you hold yourself the second you put them on. Also, they make a regular coat-and-boots night feel like you tried, even if you were rushing and your hair's still damp at the roots. The trick is treating them like an accessory for modern outerwear, not a finishing touch for a gown.
I wear long gloves with a simple slip dress under a big wool coat, or with a sleeveless knit top and tailored trousers. Sleeveless is the move. When the glove meets bare skin, it looks deliberate. When it meets a long sleeve, it can look like you forgot how clothing works. I like black gloves because they read classic, but the material decides whether you're giving "costume." Shiny satin can be a lot in daylight. Matte jersey, stretch cotton, or a soft faux leather looks more like fashion and less like a prop.
My personal fit rule: if the glove is constantly sliding down, I won't wear it out. Tugging at your forearms all night kills the vibe faster than anything. I size down if I'm between sizes, and I look for a little stretch so I can still use my phone without yanking the whole thing off. If I know I'll be eating finger food, I bring a small clip and a clean zip pouch so I can take them off and stash them without rolling them into a sad ball in my bag.
Jewelry stays quiet here. A single ring over the glove can look great, but pick something with a smooth inside so it doesn't snag, and skip anything with sharp prongs. Earrings do more than a necklace in this look, especially if your coat collar is up. It's a very specific kind of glamour, borrowed from a different era, but it lands because everything around it is simple and wearable.