The film follows the life of Adaline Bowman, who is perpetually in her 29-year-old physical form after a scientific anomaly involving lightning -- to be honest, I hated that aspect where they tried to ground the whole fantastical aspect of being forever young with science.
I bawled my eyes out when I watched the meeting between mother and daughter in the modern timeline. There was definitely a strange dynamic between Blake Lively and Ellen Burstyn (older Flemming) -- my favourite parts of the film were when mother and daughter were reunited.
Now to the costumes. Blake Lively wore many costumes from different eras of the 20th century. Of course, I had my favourites.
1940s Gown and Coat
Modern Day Vintage
I was particularly envious when she pulled out her train case when she was on the run, and what I think was a doctor's bag as a weekend bag. It really tickles my adoration for the vintage aesthetic. The movie is beautifully filmed, so if you haven't seen it, consider it a night in.