I've been told that "lagenlook" literally means "layered look." That said, I think of Krista Larson and Magnolia Pearl, and the Victorian-Edwardian inspired styles in general, as more boho than lagenlook. I don't think of them as risque. IMO you need to consider the difference between a marketing photo and the way you could wear the garment, just as with many photos in fashion magazines. (I have seen fashion photos like one with a woman wearing a conservative navy business blazer--open, with nothing whatever underneath it. I'm sure no one wore it that way to the office.)
To me, lagenlook means garments with clean simple lines, especially in natural fibers. In photos of garments for sale on eBay, I have seen outfits with many layers--a tunic over a shirt, and over a skirt as well (maybe over two skirts of different lengths), then a long drapey sweater of yet another length on top of it all. This is the extreme. I think it would take a tall person to carry it off, but I have never seen a living person wear that much at once, and maybe they don't. Photos like that do make it easier for eBay sellers to market several items in their inventory at once . . .
However, I can and do wear things like a loose linen jumper over a shirt, and maybe over a skirt as well, which is also lagenlook. Also, the garments can range from really, really big on you to just, not super-fitted. Again, I think eBay sellers go to extremes in their photos--they probably just pile the garments onto whatever plastic mannequin they have regardless of whether anything actually fits the mannequin.
I have seen garments I'd call lagenlook in books of Japanese sewing patterns, worn in a non-extreme way. Or at least, even when very large as some are, they are not photographed with too many layers.
Lagenlook designers I've seen on eBay include Completo Lino, Hebbeding, La Bass, Martine Samoun, Cynthia Ashby, Flax, and Bodil. I like some of these more than others.
XCVI Wearables (not a boutique brand, I see their clothes in department stores) manufactures a fair number of lagenlook-type styles.
There's also Homefrocks (www.homefrocks.com
) but they might be classified as boho. Homefrocks, Krista Larson, Magnolia Pearl, and Martine Samoun often like to use very thin fabrics. In addition to being more comfortable in warm weather, these reduce the bulk of the style considerably. And of course you can wear an opaque slip under them.
Ewa i Walla is a boho or a lagenlook designer, depending on your terms--they are another frilly designer. See:http://www.ebay.com/itm/Ewa-I-Walla-Lissy-Cardigan-Mole-L-/110897652392?pt=UK_Women_s_Jumpers_Cardigans&hash=item19d203e2a8http://www.ebay.com/itm/Ewa-i-Walla-Nanette-2-Layer-Skirt-Rust-Extra-Large-/110897653339?pt=UK_Women_s_Skirts&hash=item19d203e65bhttp://www.ebay.com/itm/Ewa-I-Walla-Fabienne-Thick-Cotton-Poplin-Coat-M-/110896490777?pt=UK_Women_s_Coats_Jackets&hash=item19d1f22919
Here are two online stores that sell lagenlook and boho clothes:http://shopartichoke.com/designers.htmlhttp://www.2chicboutique.com/
And an Etsy/small-business designer: http://www.etsy.com/shop/sarahclemensclothing?ref=search_shop_redirect
If anyone here does dyeing--I have had very good results dyeing Completo Lino 100% linen garments--even the thread dyes. Krista Larson clearly dyes at least some of their garments after making them. I have bought garments on eBay where the dye was streaked vertically from the elastic waists, as I found out after I bought the garments. Guess that's why they were deep-discounted on eBay. I have overdyed some Krista Larson cottons successfully, but their cotton broadcloth garments don't overdye well. They should, but my results are always blotchy. I can't figure it--my guess is Krista Larson uses broadcloth with a finish on it that prewashing with Synthrapol does not entirely remove. XCVI's 100% cottons dye very well, including the thread.