TikTok star Tinx sparks brutal backlash after posting 'deeply unpopular' opinion about birthday etiquette - insisting anyone who invites pals to a 'nice' dinner to mark their special day should pay for EVERYONE who attends

Christina 'Tinx' Najjar, 33, has sparked a fiery debate about birthday etiquette after insisting that whomever planned the celebration must pay for everyone - even if it's the birthday person.