Firstly, let's address the outfits. They've not both resorted to panto, rather they were both attending Rochelle Humes' Disney themed birthday bash over the weekend. That would explain the fire escape, somewhat.
After posting this pic to Instagram, with the caption 'As If my little muffin turned up as Prince Charming looooool 😂😘 #bruddafromanothermother', Tulisa was subjected to the usual litany of abuse from ardently obsessive One Direction fans. It included such choice sentiments as "Who the f**k is Tulisa", "F**k yourself Tulisa," to "Niall is my prince, b***h". Then there was the more sinister likes of "I'm digging her grave".
Needless to say, Tulisa got her shtreet on and deployed the following response: "Listen crazy b**ches Niall is my home boy from day, won't take abuse off u nutta's so pip the f**k down kids #wejustfriends."
Drama aside, all this is just a vehicle for us to bask in the majesty of Niall's hair. That's not even a wig.