Blake Lively was on The Tonight Show yesterday, and taped the appearance just a few short hours before walking the black carpet at the premiere of Green Lantern. Blake has been a frequent guest on morning and late-night TV programs all week as she promotes the superhero film. She's managed to avoid the topic of her new romance with Leonardo DiCaprio during her press rounds, and last night was no different. During her chat with Jay, she did talk about swimming with great white sharks and why it's important to save the endangered animals, an interest that's coincidentally very close to Leo's heart. The duo also chatted about style, with Blake giving Jay a hard time over his predilection for denim shirts, and also about her days at Burbank High. After wrapping up the interview, Blake headed to Hollywood to join her hot costar Ryan Reynolds for the debut of their movie. The starlet wore a gorgeous Chanel Spring 2009 couture look and avoided doing much press at the event, instead sticking close to her parents and siblings, who she brought as her guests.