Young Red Haired Girl Strips Her Clothes At The Wall With Paintings In The Frame

When it was realized this method of producing a frame and the image within in one slab of wood was too costly, "a more efficient method was eventually developed which used mitred moulding strips. These strips were attached to a flat wooden panel which produced a similar result to the carved panel, but were more cost effective. This type of frame is known as an engaged frame. The early ones were made of simple wooden moulding strips attached to the outside edge of a wooden panel."
Throughout the 14th and 15th centuries, most European frames were church-commissioned and largely unmovable as they were altarpieces and a large part of the church's architecture. The frames were ornamented with architectural elements mimicking the exteriors of the great cathedrals. However the Renaissance of 14th and 15th century Italy saw the rise of arts patrons extending beyond the church. Wealthy nobles such as the Medici family could now bring art and frames into their estate by commissioning allegorical, devotional and portrait paintings. This was the advent of the portable or moveable frame.
Under the reign of Francis I, France's first Renaissance monarch from 1515 through 1547, art came to the forefront of daily life and flourished along with picture frames. Many workers came from Italy to partake in the arts trade, including Leonardo da Vinci, whom "Francis convinced to leave Italy in the last part of his life." Frames were now designed by furniture builders rather than the artist, sculptor or architect as in the past. Books on furniture and interior design were published and in distribution to a wider market than ever before.
From 1610 to 1643, under the reign of Louis XIII in France, the influence of court and refinement takes center stage in frame designs. The profiles became thinner than their Italian predecessors, and continuous design such as egg-and-dart, ribbon and flow of leaves, and pronounced low relief corner designs appear. This paves the way for Baroque design in picture framing, and "Spanish, Flemish, and Italian influences were all at work to produce a curious intermingling and exchange of ideas."