Heineken to headline 2018 edition of lagos fashion week with an after party
I think there may be some confusion here. Heineken is a beer brand, not a fashion brand, so it's unlikely that they would be headlining a fashion event like Lagos Fashion Week.
However, it's possible that Heineken may be sponsoring or partnering with Lagos Fashion Week to host an after-party or a special event. Many fashion events and festivals have after-parties or sponsored events that feature music, food, and drinks, and Heineken may be one of the brands involved in such an event.
If you're looking for information on the lineup or schedule for Lagos Fashion Week, I recommend checking the official website or social media channels of the event organizers. They should have the most up-to-date information on the event's schedule, including any after-parties or sponsored events.