How do I make this query order by month: January, February, March....?

With the current query it orders the months alphabeticaly. How do I make it order correctly?

SELECT

  DATENAME(mm,FilteredNew_application.new_effectivestartdate) as Month
  ,sum(FilteredNew_application.new_gp) as GP
  ,sum(FilteredNew_application.new_approvalamount) as Approval
  ,sum(FilteredNew_application.new_equiptmentcost) as Revenue
  
FROM
  FilteredNew_application
WHERE
  FilteredNew_application.new_primaryvendoridname LIKE N'Dell%'
  AND FilteredNew_application.new_applicationstatusname = N'Vendors Paid'
AND FilteredNew_application.new_effectivestartdate >= N'02/01/2010 00:00:00'

Group by DATENAME(mm,FilteredNew_application.new_effectivestartdate)
Order by DATENAME(mm,FilteredNew_application.new_effectivestartdate)

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