Her works, often sewed or carved, are intensively labour-based and often deal with themes of domesticity and the elaborate function which women perform in the social sphere.
[3] The majority of Siem's early work made use of the preceding German artistic generation as source material by consistently quoting and borrowing aesthetic elements albeit in a satirizing and ironic manner.
[4] Over the course of her career, Siem has also drawn from a wide variety of ethnographic sources including puppets, traditional furniture design, and European folk costumes as well as elements of anthropology and sociology The artist lives and works in Berlin.
In these works, Siem makes use of 'traditional' female domains such as sewing and fashion to satirize and critically evaluate the influences of the influential artistic generation which preceded her.
Similarly, murals which were created by Siem in the same period reference the large-scale wall paintings by the German artist Blinky Palermo.
Untitled (6 Masks) is made up of six large furry outfits resembling traditional costumes of folk characters from the Alpine regions of Germany, Switzerland, and Austria.
In the group Untitled (7 Masks) the artist has reproduced her own face in seven different facial expressions in reference to the 18th century German-Austrian sculptor Franz Xaver Messerschmidt.
The group Untitled (42 Stones) ironically performs the formal canon of modernist sculptures in papier-mâché (visually referencing figures such as Hans Arp and Henry Moore) in 42 individual examples.
A group of life-size dolls, figurines and wooden objects appear comically small, like toys, in the center of an oversize carpet.
Anxiety, vision and comedy are central elements of the main installation, which consists of an "Africa collection" made up of household items obsessively occupying the entire room.