Don Draper's Hat: no, i think.
http://bloodborne.wiki.fextralife.com/New+Game+Plus
What will carry over to NG+
Player Level
Insight
All consumables items.
All your weapons and armor, including 'Item Box' items
All caryll runes (runes already obtained will be replaced by madman's knowledges at their locations in NG+)
Covenant and covenant level
All badges and unlocked items (i.e. messengers will still sell all the items they did in NG.)
Chalice dungeons & their progress[/B]
Workshop tools (Rune, Gemstone upgrades). The locations where you picked up these tools in NG will now have Kin Coldblood of varying levels.
What doesn't carry over
Keys (key items such as badges and the Yharnam Stone carry over)
All unlocked doors, shortcuts, etc. will need to be reopened
Any non-consumed One Third of Umbilical Cord items
Messenger Skins not unlocked by DLC (i.e. Bloody Messenger Head Bandage) won't carry over as well.
Preparing for NG+
Buy any items (preferably in bulk) you want from merchants.
Farm for Materials and any other items you might need.
Upgrade all your main weapons to max level, since enemies in NG+ have more health and hit for more damage.
Find the Blood Rock in your world. (Only one guaranteed way to get this item)
Complete the quest line with Eileen the Crow and get the Crow Hunter Badge.
Complete the quest line with Alfred and receive the Wheel Hunter Badge.
Visit optional areas such as Upper Cathedral Ward, Forsaken Castle Cainhurst, Nightmare Frontier.
Join and rank up a Covenant.
Find all possible Badges and purchase their contents.
Send all possible NPC characters to Cathedral Ward safely.
Find all Hunter tools (or spells).
Collect all possible Messenger Skins (Note: Messenger skins disappear upon entering NG+ EXCEPT for the equipped one.)
Defeat all of the Great Ones in order to obtain all the starting Chalices
Defeat the Mother Brain in order to obtain Living String required for Great Pthumeru Ihyll Chalice Ritual