Vivian Tu, Your Rich BFF, a former Wall Street trader and financial influencer, isn’t just opening up about the usual purse must-haves like lip gloss, socks, or hand sanitizer. She’s getting real about something more interesting: her prenuptial. While going through her purse in a TikTok video, she shares details of her prenuptial with her husband. According to her, they went 50/50 on everything they brought into the marriage and split things evenly during the marriage. Pretty straightforward, right? But here’s where it gets interesting: she carved out 100% of the equity in her business. Don’t …