"Generate a realistic, detailed image of girl’s long pajama pants featuring a plaid pattern in varying shades of blue and dark blue with white drawstrings. The fabric should look soft and cozy, with the plaid design clearly visible. Display the pants against a bright, clean background to make the pattern and texture stand out. Ensure the lighting is bright and natural, highlighting the softness and comfort of the pajama fabric without any distractions in the background. The background is bright a clear white.