Here are some pictures of what the main ponies will be wearing, Twilight.. eh something close to that.
sorry that you have to copy and paste the link...
Shining armor
http://derpington1337.deviantart.com/art/Shining-Armor-and-stuff-299074486
http://th08.deviantart.net/fs71/PRE/i/2012/127/e/0/shining_armour_by_europamaxima-d4vznpt.jpg
rarity
http://fc09.deviantart.net/fs70/f/2013/049/7/4/armored_rarity_by_clamdiggydiggy-d5vh10l.png
AJ
http://fc00.deviantart.net/fs71/f/2012/360/8/3/imperium_solarne_applejack_by_elsadzonka-d5p8wuf.png
Cadence
http://fc02.deviantart.net/fs71/i/2013/153/f/6/armored_princess_mi_amore_cadenza___cadence_by_clamdiggydiggy-d67icdj.png
Fluttershy
https://derpicdn.net/img/2013/2/22/252235/full.png
http://th08.deviantart.net/fs70/PRE/i/2013/147/5/c/armored_fluttershy_by_clamdiggydiggy-d66r0ro.png
Luna and Celestia
http://www.wallpapernono.com/thumbnails/detail/20131025/cartoons%20armor%20luna%20ponies%20princess%20celestia%20princess%20luna%20celestia%20my%20little%20pony%20friendship%20is%20magic%20equestria_www.wallpapernono.com_95.jpg
http://derpicdn.net/media/W1siZiIsIjIwMTIvMTAvMDUvMTRfMjFfNDJfMTI0XzExNDE5MF9fVU5PUFRfX3NhZmVfcHJpbmNlc3NfY2VsZXN0aWFfYXJ0aXN0X3NpbGZvZSJdXQ/114190__safe_twilight%2Bsparkle_princess%2Bcelestia_armor_axe_artist-colon-silfoe.jpg
Pinky Pie
http://fc00.deviantart.net/fs71/i/2012/131/a/a/the_new_royal_guardian_pinkie_pie_by_jennieoo-d4ywpnu.png
Rainbow dash
http://fc07.deviantart.net/fs70/i/2013/033/f/5/rainbow_dash___scat___armor_by_dolphinfox-d5nw5sf.png
These images can give you an Idea when the ponies are getting prepared for the final battle.
Twilight
http://www.google.com/imgres?imgurl=http%3A%2F%2Ffc00.deviantart.net%2Ffs71%2Fi%2F2013%2F232%2Fb%2F3%2Fbattle_armored_twilight_sparkle_by_inuhoshi_to_darkpen-d6izero.png&imgrefurl=http%3A%2F%2Finuhoshi-to-darkpen.deviantart.com%2Fart%2FBattle-Armored-Twilight-Sparkle-394682244&h=700&w=900&tbnid=iLH34_sILtSrjM%3A&zoom=1&docid=qsr5YOxdznhwjM&ei=bglGU-i3OqTu2AWMw4HYCQ&tbm=isch&ved=0CIkBEIQcMBI&iact=rc&dur=523&page=2&start=11&ndsp=15
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