Leicester, who narrowly avoided relegation to the Championship at the end of last season, are at the top of the Premier League table at the moment.
The Foxes have picked up 28 points from 13 matches so far this campaign and are just a point above Manchester United, who are currently second in the standings.
Manchester City and Arsenal both are below Leicester in the league table, and so are the likes of Tottenham Hotspur, Liverpool and Chelsea.
West Brom goalkeeper Foster is impressed with the season that Leicester are having and has praised them on Twitter.
So after 13 games @LCFC are top, as achievements go, with the money in today's game, that is incredible.— Ben Foster (@BenFoster) November 21, 2015
West Brom themselves are doing relatively well and are pushing for a mid-table spot.
The Baggies are 12th in the Premier League table at the moment with 17 points from 13 matches.
Tony Pulis’s side, who defeated Arsenal 2-1 at The Hawthorns on Saturday afternoon, will take on West Ham United away from home in London next weekend.