Problem retrieving child table ASPNET Core API

I've created an API with ASPNET Core 2 that has a BlogPost service. The service handles creating blog posts and tags. The "Tags" are linked to the BlogPosts (as their children, by blogpostid), but i can't find a way to display those tags when i'm retrieving blogposts.

This is what i'm getting at the moment.

{
    "id": 3,
    "title": "Im Just Testing",
    "body": "Esta Bien senor",
    "type": "News",
    "dateCreated": "9/20/2018 12:00:00 AM",
    "author": "Dante",
    "tags": []
}

This is my controller ->

[HttpGet("posts/{id}")]
public IActionResult GetBlogPostById(int id, bool includePostTags = true)
{
    var blogPost = _blogPostService.GetBlogPostById(id, includePostTags);

    if(blogPost == null)
    {
        return NotFound();
    }

    var blogPostDto = _mapper.Map<BlogPostDto>(blogPost);
    return Ok(blogPostDto);
}

This is my BlogPostDTO

public class BlogPostDto
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string Body { get; set; }
    public string Type { get; set; }
    public string DateCreated { get; set; }
    public string Author { get; set; }

    public ICollection<BlogPostTagDto> Tags { get; set; }
        = new List<BlogPostTagDto>();
}

And finally this is my BlogPostTag Entity ->

public class BlogPostTag
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    [Required]
    [MaxLength(50)]
    public string TagName { get; set; }

    [MaxLength(200)]
    public string Description { get; set; }

    [ForeignKey("BlogPostId")]
    public BlogPost BlogPost { get; set; }
    public int BlogPostId { get; set; }
}

And my BlogPostTagDto

public class BlogPostTagDto
{
    public int Id { get; set; }
    [Required(ErrorMessage = "You should provide a Tag Name value.")]
    [MaxLength(50)]
    public string TagName { get; set; }

    [MaxLength(200)]
    public string Description { get; set; }
}

TLDR: The BlogPostTags are created (i checked the DB), but i can't retrieve them in the "Get All Posts" call.

BlogPostService ->

public BlogPost GetBlogPostById(int id, bool includePostTags)
{
    if(includePostTags)
    {
        return _context.BlogPosts.Include(c => c.BlogPostTags).Where(c => c.Id == id).FirstOrDefault();
    }
    return _context.BlogPosts.Where(c => c.Id == id).FirstOrDefault();
}

And DataContext (perhaps it helps) ->

public class DataContext : DbContext
{
    public DataContext(DbContextOptions<DataContext> options) : base(options)
    {
        Database.Migrate();
    }

    public DbSet<User> Users { get; set; }
    public DbSet<BlogPost> BlogPosts { get; set; }
    public DbSet<BlogPostTag> BlogPostTags { get; set; }
}

BloGPost ENTITY

public class BlogPost
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    [Required]
    [MaxLength(100)]
    public string Title { get; set; }

    [Required]
    [MaxLength(500)]
    public string Body { get; set; }
    public string Type { get; set; }
    public string DateCreated { get; set; }
    public string Author { get; set; }

    public ICollection<BlogPostTag> BlogPostTags { get; set; }
        = new List<BlogPostTag>();
}

Added Mapper profile ->

    public AutoMapperProfile()
    {
        CreateMap<User, UserDto>();
        CreateMap<UserDto, User>();
        CreateMap<BlogPost, BlogPostDto>();
        CreateMap<BlogPostDto, BlogPost>();
        CreateMap<BlogPostTag, BlogPostTagForCreationDto>();
        CreateMap<BlogPostTagForCreationDto, BlogPostTag>();
       // CreateMap<BlogPostTagForCreationDto, BlogPostTag>();
    }

SOLVED:

Apparently in my BlogPostDto i had to retrieve "BlogPostTagForCreationDto" instead of the normal Dto.

    public ICollection<BlogPostTagForCreationDto> BlogPostTags { get; set; }
        = new List<BlogPostTagForCreationDto>();

This PLUS changing the name from "Tags" to "BlogPostTags" seems to have fixed my issue. I've got to research more on why this happened.