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diff --git a/lib/axlsx/drawing/pie_series.rb b/lib/axlsx/drawing/pie_series.rb
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+++ b/lib/axlsx/drawing/pie_series.rb
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+module Axlsx
+  # A PieSeries defines the title, data and labels for pie charts
+  # @note The recommended way to manage series is to use Chart#add_series
+  # @see Worksheet#add_chart
+  # @see Chart#add_series
+  class PieSeries < Series
+
+    # The data for this series. 
+    # @return [Array, SimpleTypedList]
+    attr_reader :data
+
+
+    # The labels for this series.
+    # @return [Array, SimpleTypedList]
+    attr_reader :labels
+
+
+    # The explosion for this series
+    # @return [Array, SimpleTypedList]
+    attr_accessor :explosion
+
+    # Creates a new series
+    # @option options [Array, SimpleTypedList] data
+    # @option options [Array, SimpleTypedList] labels
+    # @option options [String] title
+    # @option options [Integer] explosion
+    # @param [Chart] chart
+    def initialize(chart, options={})
+      super(chart, options)
+      self.data = options[:data]  || []
+      self.labels = options[:labels] || []
+    end 
+    
+    def explosion=(v) Axlsx::validate_unsigned_int(v); @explosion = v; end
+    # Serializes the series
+    # @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
+    # @return [String]
+    def to_xml(xml)
+      super(xml) do  |xml|
+        xml.send('c:explosion', :val=>@explosion) unless @explosion.nil?
+        if !labels.empty?
+          xml.send('c:cat') {
+            xml.send('c:strRef') {
+              xml.send('c:f', Axlsx::cell_range(labels))
+              xml.send('c:strCache') {
+                xml.send('c:ptCount', :val=>labels.size)
+                labels.each_with_index do |cell, index|
+                  v = cell.is_a?(Cell) ? cell.value : cell
+                  xml.send('c:pt', :idx=>index) {
+                    xml.send('c:v', v)
+                  }                          
+                end
+              }
+            }
+          }
+        end
+        xml.send('c:val') {
+          xml.send('c:numRef') {
+            xml.send('c:f', Axlsx::cell_range(data))
+            xml.send('c:numCache') {
+              xml.send('c:formatCode', 'General')
+              xml.send('c:ptCount', :val=>data.size)
+              data.each_with_index do |cell, index|
+                v = cell.is_a?(Cell) ? cell.value : cell
+                xml.send('c:pt', :idx=>index) {
+                  xml.send('c:v', v) 
+                }
+              end
+            }                        
+          }
+        }
+        
+      end      
+    end
+    
+    
+    private 
+
+
+    # assigns the data for this series
+    def data=(v) DataTypeValidator.validate "Series.data", [Array, SimpleTypedList], v; @data = v; end
+
+    # assigns the labels for this series
+    def labels=(v) DataTypeValidator.validate "Series.labels", [Array, SimpleTypedList], v; @labels = v; end
+
+  end
+
+end