當布里奇特·瓊斯(一個三十歲、經常自我疑慮、自我審視、計算卡路里的倫敦單身女性)經過一系列的磨難后終于與近乎完美的律師馬克·達西終成眷屬，一系列麻煩又來了……
　　在與馬克(科林-福斯飾)渡過了六個令人心醉的浪漫星期之后，布里奇特(蕾妮-齊薇格飾)仍然不忘去置疑她的生活和愛情，她時常會禁不住想，當這一切的新鮮感和快樂過去之后會剩下什么？就在她試圖搞清楚時，強力對手來了，達西漂亮、溫柔、精干的新助手麗貝卡(杰辛達-巴萊特飾)令布里奇特醋意大發。就在嫉妒和疑慮的壓力下，布里奇特的前任老板(同時也是前任男友)丹尼爾(休-格蘭特飾)也來到了她所在的電視臺，這使她頻頻出丑，就好像倒霉的事情只發生在她一人頭上。
　　在這一部續集中，影片拍攝場景大大的增加了，從倫敦的熟悉街道到阿爾卑斯山的陡峭雪地，再到泰國的美麗海岸，布里奇特這會可是過足了旅游癮，并且出盡了洋相。你可以看到她跳傘(或者摔落)、滑雪(或者翻滾)，甚至進監獄(其實真的是一場誤會～)！《BJ單身日記：理性邊緣》帶我們可愛的布里奇特領略一系列冒險之旅，并不失幽默地展現了她全新的愛情攻守大戰。
如果你喜歡Bridget Joness Diary的專輯《電影原聲 - Bridget Jones's Diary 2(BJ單身日記2)》里的歌曲，可以把下面的歌曲連接發給你的朋友:
1.Me & Mrs. Jones - The Dramatics - Bridget Joness Diary
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2.Someone Like You - Van Morrison - Bridget Joness Diary
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3.My Lovin' (You're Never Gonna Get It) - En Vogue - Bridget Joness Diary
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4.My Funny Valentine - Elvis Costello - Bridget Joness Diary
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5.Ain't No Mountain High Enough - Diana Ross - Bridget Joness Diary
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6.Yes - McAlmont & Butler - Bridget Joness Diary
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7.Woman - Neneh Cherry - Bridget Joness Diary
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8.Without You - Nilsson - Bridget Joness Diary
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9.Do What You Got To Do - Nina Simone - Bridget Joness Diary
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10.Say What You Want - Texas - Bridget Joness Diary
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11.Brass In Pocket - Pretenders - Bridget Joness Diary
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12.Out Of Reach (Acoustic Version) - Gabrielle - Bridget Joness Diary
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13.Will You Still Love Me Tomorrow? - The Shirelles - Bridget Joness Diary
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14.Let's Get It On - Marvin Gaye - Bridget Joness Diary
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15.Waterfalls - TLC - Bridget Joness Diary
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16.Angels - Robbie Williams - Bridget Joness Diary
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17.It Should Have Been Me - Yvonne Fair - Bridget Joness Diary
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18.Ooo Baby Baby - Smokey Robinson - Bridget Joness Diary
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19.I Don't Want To Talk About It - Dina Carroll - Bridget Joness Diary
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20.Passionate Kisses - Mary Chapin Carpenter - Bridget Joness Diary
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