Styling raster and vector layers using remote sld in mapserver

I have a mapfile and a remote sld that I want to use to style my vector layer. But each time I put a request the map is retued without a style.
My mapfile is as follows:

MAP
NAME "MAPSERVER QUICKSTART"
EXTENT -137 29 -53 88
UNITS DD
SHAPEPATH "/data/world"
SIZE 800 600

IMAGETYPE PNG24

PROJECTION
 "init=epsg:4326"
END

WEB
 IMAGEPATH '/tmp/'
IMAGEURL '/tmp/'
TEMPPATH '/tmp/'

METADATA
  ows_enable_request "*"
END

END

LAYER
NAME "admin"
STATUS ON
TYPE POLYGON
DATA "countries"
CLASS
  STYLE
    COLOR 246 241 223
    OUTLINECOLOR 0 0 0
  END
END

END

END

I am using the following request to access the map. Get map request

What is it that I could be doing wrong