diff --git a/settings/common.py b/settings/common.py
index 07ac5e41..95fad2bd 100644
--- a/settings/common.py
+++ b/settings/common.py
@@ -311,12 +311,14 @@ SOUTH_MIGRATION_MODULES = {
 }
 
 DEFAULT_AVATAR_SIZE = 80                # 80x80 pixels
+DEFAULT_BIG_AVATAR_SIZE = 300           # 300x300 pixels
 
 DEFAULT_AVATAR_URL = ''
 
 THUMBNAIL_ALIASES = {
     '': {
         'avatar': {'size': (DEFAULT_AVATAR_SIZE, DEFAULT_AVATAR_SIZE), 'crop': True},
+        'big-avatar': {'size': (DEFAULT_BIG_AVATAR_SIZE, DEFAULT_BIG_AVATAR_SIZE), 'crop': True},
     },
 }
 
diff --git a/taiga/users/api.py b/taiga/users/api.py
index 46808f2c..76481141 100644
--- a/taiga/users/api.py
+++ b/taiga/users/api.py
@@ -153,6 +153,23 @@ class UsersViewSet(ModelCrudViewSet):
         request.user.save(update_fields=["password"])
         return Response(status=status.HTTP_204_NO_CONTENT)
 
+    @list_route(methods=["POST"])
+    def change_avatar(self, request):
+        """
+        Change avatar to current logged user.
+        """
+        self.check_permissions(request, "change_avatar", None)
+
+        avatar = request.FILES['avatar']
+
+        if not avatar:
+            raise exc.WrongArguments(_("Incomplete arguments"))
+
+        request.user.photo = avatar
+        request.user.save(update_fields=["photo"])
+        user_data = serializers.UserSerializer(request.user).data
+        return Response(user_data, status=status.HTTP_200_OK)
+
     @detail_route(methods=["GET"])
     def starred(self, request, pk=None):
         user = self.get_object()
diff --git a/taiga/users/permissions.py b/taiga/users/permissions.py
index f3c2d921..f10a31da 100644
--- a/taiga/users/permissions.py
+++ b/taiga/users/permissions.py
@@ -35,4 +35,5 @@ class UserPermission(ResourcePermission):
     password_recovery_perms = AllowAny()
     change_password_from_recovery_perms = AllowAny()
     change_password_perms = IsAuthenticated()
+    change_avatar_perms = IsAuthenticated()
     starred_perms = AllowAny()
diff --git a/taiga/users/serializers.py b/taiga/users/serializers.py
index 1128d274..70b2879f 100644
--- a/taiga/users/serializers.py
+++ b/taiga/users/serializers.py
@@ -19,18 +19,19 @@ from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 
 from .models import User
-from .services import get_photo_or_gravatar_url
+from .services import get_photo_or_gravatar_url, get_big_photo_or_gravatar_url
 
 
 class UserSerializer(serializers.ModelSerializer):
     full_name_display = serializers.SerializerMethodField("get_full_name_display")
     photo = serializers.SerializerMethodField("get_photo")
+    big_photo = serializers.SerializerMethodField("get_big_photo")
 
     class Meta:
         model = User
         fields = ('id', 'username', 'full_name', 'full_name_display', 'email', 'github_id',
                   'color', 'bio', 'default_language', 'default_timezone',
-                  'is_active', 'photo')
+                  'is_active', 'photo', 'big_photo')
 
     def get_full_name_display(self, obj):
         return obj.get_full_name() if obj else ""
@@ -38,6 +39,9 @@ class UserSerializer(serializers.ModelSerializer):
     def get_photo(self, user):
         return get_photo_or_gravatar_url(user)
 
+    def get_big_photo(self, user):
+        return get_big_photo_or_gravatar_url(user)
+
 
 class RecoverySerializer(serializers.Serializer):
     token = serializers.CharField(max_length=200)
diff --git a/taiga/users/services.py b/taiga/users/services.py
index 3394718b..ce670e94 100644
--- a/taiga/users/services.py
+++ b/taiga/users/services.py
@@ -20,6 +20,7 @@ This model contains a domain logic for users application.
 
 from django.db.models.loading import get_model
 from django.db.models import Q
+from django.conf import settings
 
 from easy_thumbnails.files import get_thumbnailer
 
@@ -62,3 +63,16 @@ def get_photo_or_gravatar_url(user):
     if user:
         return get_photo_url(user.photo) if user.photo else get_gravatar_url(user.email)
     return ""
+
+
+def get_big_photo_url(photo):
+    """Get a big photo absolute url and the photo automatically cropped."""
+    url = get_thumbnailer(photo)['big-avatar'].url
+    return get_absolute_url(url)
+
+
+def get_big_photo_or_gravatar_url(user):
+    """Get the user's big photo/gravatar url."""
+    if user:
+        return get_big_photo_url(user.photo) if user.photo else get_gravatar_url(user.email, size=settings.DEFAULT_BIG_AVATAR_SIZE)
+    return ""