This movie is a story about ‘love’ actually though it is labeled “Sex and the City” because it is based on the famous American TV show by the same name. The story revolves around the high profile New York life of four friends Carrie (Sarah Jessica Parker), Charlotte (Kristin Davis), Miranda (Cynthia Nixon) and Samantha (Kim Cattrall).
Carrie is an author and is in relationship with Big (Chris Noth) for the last ten years but they are not yet married. Charlotte is happily married but is childless so she and her husband visit China and adopt a girl Lily from there and are very happy thereafter. Miranda is also married with a son and is a lawyer. She finds it difficult to look at the emotional side of life. Samantha is a TV star and is dating a man but all that she can think of is sex and money. She is selfish and puts herself before others and so it is difficult for her to commit.
The film begins with Carrie and Big viewing apartments with the intention of moving in together. However, Carrie experiences doubts over the sensibility of this arrangement, explaining that they are not married, and as such she would have no legal rights to their home in the event of a separation. Big suggests that they get married.
Miranda hasn’t had sex with Steve (David Eigenberg) in six months. She is devastated when Steve reveals he has slept with another woman, and immediately separates from him. Samantha is living with Smith (Jason Lewis), who has a successful television career. She grapples with her persistent desire for sex with other men; her handsome and sexually active next-door-neighbor, Dante (Gilles Marini), in particular.
Carrie’s wedding plans escalate into such a lavish event that Big begins to experience doubts. Carrie does a photo shoot for Vogue. While returning a book to the library, Carrie sees a wedding being held there and chooses it for her own venue.
After an argument with Steve at the rehearsal dinner, Miranda, still upset about Steve’s indiscretion, tells Big bluntly that he and Carrie are crazy to be getting married, as marriage ruins everything. On the day of the ceremony, he decides he cannot go through with it, leaving Carrie devastated and fleeing from the library, where their wedding was supposed to take place. Big, however, changes his mind and intercepts Carrie as he sees her limousine drive past. Carrie, humiliated and betrayed, proceeds to attack Big with her bouquet, while he earns furious looks from Miranda and Charlotte. The four women subsequently take the honeymoon that Carrie had booked to Mexico, where they de-stress themselves.
On her return to New York, Carrie hires an assistant, Louise (Jennifer Hudson), to help her move back into her old apartment and manage her administration. Charlotte learns she is pregnant after a visit to her doctor. Miranda eventually confesses to Carrie about what happened during the night of the rehearsal dinner, and the two have a brief falling out. After reflecting on the argument she had with Carrie, Miranda agrees to attend couples counseling with Steve, and they are eventually able to reconcile. Samantha begins overeating to keep from cheating on Smith with Dante, but eventually realizes that their relationship is simply not working, and that she needs to put herself first. The two break up, and she moves back to New York. Charlotte for several months is concerned that something might happen to the baby, as her life seems to be too perfect.
A surprise encounter with Big at a restaurant leaves Charlotte so furious that she goes into labor. Big delivers her to the hospital, and waits until baby Rose is born, hoping to see Carrie. Harry passes on the message that Big would like her to call him, and that he has written to her frequently, but never received a reply. She finds that he has sent her dozens of letters copied from the Love Letters of Great Men book she showed him in the weeks before their wedding.
One hour before the locks are due to be changed on their shared penthouse apartment, Carrie travels to the home Big had bought for them to collect a pair of shoes she had left there. She finds Big in the walk-in closet he had built for her, and the moment she sees him, her anger at his betrayal dissipates. They later marry alone, in a simple wedding in New York City Hall, with Carrie dressed in the original dress she had bought in a vintage shop. They hold a get-together at a local diner with their friends. The film ends with the four women around a table in a restaurant, sipping cosmopolitans, and celebrating Samantha’s fiftieth birthday, with Carrie making a toast to the next fifty.