It’s been a big weekend with a capital B if you’re a fan of Barbie… We won’t know the final opening weekend box office figures until today, given they include the all-important North America/European markets, but early results show the Greta Gerwig-directed film has had the biggest opening weekend of the year. In fact, it’s tipped to rake in more than US$150 million in the States in its first 3 days alone, making it one of the biggest opening weekends on record. As for Oppenheimer, it’s on track to bring in more than US$80 million in its first weekend, which is a very respectable result. Experts say that means the Barbenheimer hype will likely have delivered cinemas its first huge weekend in years. And if social media is to be believed, many movie buffs followed even through on their promises to buy tickets to both movies… That means there were outfit changes galore to keep up with…