These pics were taken from the southern parts of Russia though. Most of the colorful dresses were from the Caucuses and the various Asiatic peoples that were part of Russia at the time.

You will notice that most Russian men in there are wearing spiffy shiny uniforms. Russians loved their uniforms in the late Tsarist period. You can even see why during the revolution the Tsar's supporters were called the Whites. Notice how the top bosses in the railroads pics always wear shiny white uniforms.