Yah sure! First of all: @chrissydeath and @amadeo-child-of-the-renaissance are fab Armand cosplayers/artists and also @sheepskeleton, who has drawn Armand in modern outfits, they’d probably have better suggestions than mine but I WILL TRY.
I’d suggest looking at fanart of Armand, and unfortunately, I don’t have my #fanart collection divided into different characters so I pulled a few memorable ones out for ya here ;D Go ahead and jump in that tag for more, if u dare.
The crucial part of any Armand cosplay is his hair, of course, but everything else is p. much up to you. What would you headcanon he wears? Sometimes he likes to be all decked out in pricey fitted clothes, but he also has a sense of humor, he probably went for all kinds of silliness in the ‘70′s (and he still goes to 70′s themed parties bc of course he does), but I think he’s most comfortable in tight black pants or skinny jeans, a loose t-shirt (Daniel’s probably), and a well-worn light-weather jacket. He looks great in fur for winter, too.
In no special order, some fanart w/ Armand in modern fashion.

[X by @remarried, ~art gallery chic~ turtleneck and mid-thigh coat w/ what looks like trimmed black fur lining. Leather gloves would be good, too.]

[X by @sheepskeleton, keepin’ it casual with a plain collared cotton shirt and denim jacket]

[X Look it’s @chrissydeath as one of @garama‘s versions of Armand! ❤ such attention to detail right down to the belt! I really like Armand in a v-neck.]

[X by @superhiki, Diso inferno indeeeeed! AVIATOR SHADES YES]

[X by @garama,I am diggin’ Armand’s fringe top w/ V neck, tight magenta leather (or pleather!) pants, & classic converse kicks combo but Lestat looks wayyy hotter.]
Hit the jump for a fewwww moar…

[X by @sheepskeleton, simplicity]

[X by @sheepskeleton I couldn’t crop it for size, just too gorgeous!]

[X by @sheepskeleton I am really digging this leather and stripes w/ loose engineer boots look. Very 50′s greaser/80′s punk.]