diff --git a/src/Layout.js b/src/Layout.js
index db06c972..905ed392 100755
--- a/src/Layout.js
+++ b/src/Layout.js
@@ -267,11 +267,13 @@ var computeLayout = (function() {
         } else if (alignItem == CSS_ALIGN_FLEX_END) {
           leadingCrossDim += remainingCrossDim;
         } else if (alignItem == CSS_ALIGN_STRETCH) {
-          child.layout[dim[crossAxis]] = node.layout[dim[crossAxis]] -
-            getPadding(node, leading[crossAxis]) -
-            getPadding(node, trailing[crossAxis]) -
-            getMargin(child, leading[crossAxis]) -
-            getMargin(child, trailing[crossAxis]);
+          if (!isDimDefined(child, crossAxis)) {
+            child.layout[dim[crossAxis]] = node.layout[dim[crossAxis]] -
+              getPadding(node, leading[crossAxis]) -
+              getPadding(node, trailing[crossAxis]) -
+              getMargin(child, leading[crossAxis]) -
+              getMargin(child, trailing[crossAxis]);
+          }
         }
         child.layout[pos[crossAxis]] += leadingCrossDim;
       }
diff --git a/src/__tests__/Layout-test.js b/src/__tests__/Layout-test.js
index 6ebc63af..2dc7cf15 100755
--- a/src/__tests__/Layout-test.js
+++ b/src/__tests__/Layout-test.js
@@ -518,6 +518,23 @@ describe('Layout', function() {
     );
   });
 
+  it('should layout node with specified width and stretch', function() {
+    testLayout(
+      {style: {}, children: [{
+        style: {}, children: [
+          {style: {width: 400}}
+        ]},
+        {style: {width: 200, alignSelf: 'stretch'}}
+      ]},
+      {width: 400, height: 0, top: 0, left: 0, children: [
+        {width: 400, height: 0, top: 0, left: 0, children: [
+          {width: 400, height: 0, top: 0, left: 0}
+        ]},
+        {width: 200, height: 0, top: 0, left: 0}
+      ]}
+    );
+  });
+
   it('should layout randomly', function() {
     function RNG(seed) {
       this.state = seed;