GetDisplayNameFor<MyType>(x=>x.MyProperty);

DisplayNameHelper.cs

        /// <summary>
        /// Get the DataAnnotation attributed DisplayName attribute value.
        ///  </summary>
        /// <example>
        ///  GetDisplayNameFor&lt;VagtTyper&gt;(x =&gt; x.Doegnvagt) ==&gt; "Døgnvagt"
        /// </example>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="propLambda"></param>
        /// <returns></returns>
        public string GetDisplayNameFor<TSource>(Expression<Func<TSource,object>> propLambda)
        {
            var expression = propLambda.Body;
            var unaryExp = expression as UnaryExpression;

            if (unaryExp != null)
            {
                var memberExp = (MemberExpression)unaryExp.Operand;
                var dna = memberExp.Member
                    .GetCustomAttributes(typeof(DisplayNameAttribute), true)
                    .Cast<DisplayNameAttribute>()
                    .FirstOrDefault();
                return dna == null ? memberExp.Member.Name : dna.DisplayName;
               
            }
            throw new ArgumentException("Only properties can be used in this method");
        }

A quick take on using the System.ComponentModel.DataAnnotations.DisplayNameAttribute like this:

var displayName = GetDisplayNameFor(x=>x.MyProperty);

Where

class MyType{
[DisplayName("Something Foo")]
public bool MyProperty{get;set;}
}