先来个总提纲，麦嘎关系大致可以分为三个时期，以关键事件来划分如下：
表达指南之前的亲密母女期
表达指南后到奥斯卡贴贴之前的爱恨母女期
奥斯卡贴贴后的塑料母女时期

08-09年：
麦当娜创作出了麦嘎线重要单曲She’s Not Me，不过这首歌原本只是写给小三的歌曲，发行时嘎嘎还没以嘎嘎出道。
嘎嘎出道前前往观看了甜黏巡演，之后开始精心策划了属于自己的辉煌。
后来二合一横空出世，虽然真的很红，但是此时的一些专业评价已经开始评价我嘎麦里麦气了，毕竟光血统都是最接近的一对，这里贴一段《大英百科》的评价：
Infectious dance pop might not seem to be the most obvious outlet for an aspiring performance artist, but Stefani Joanne Angelina Germanotta is not exactly a slave to convention.
Styling herself as Lada Gaga, she paired high-energy dance music with over-the-top fashion, unbridled sexuality, and elaborate choreography in a manner that drew numerous comparisons to an earlier “ambitious blonde.”

08-09年：
虽然这时候已经有媒体开始雌竞这俩，但在这个时期，这俩反而是亲密贴贴的状态：
09年嘎嘎二合一走红时期专门去了麦当娜的私人派对，据媒体报道两人斗舞一夜非常开心，两人在MTV也开心合照。
之后两人又上了SNL，贡献了世纪名场面之麦嘎互殴（是真的她们本人在节目上打架），b站就有全场视频，非常搞笑，建议观看

2011年，腥风血雨开始：
Born This Way单曲发行，由于与Express Youself音乐重复性太高，彼时的诸多乐评，甚至名校学术论文都指出了这一点，音乐制作角度的细致的对比在b站也有视频可查，以下是相关评论和论文节选：
Rob Sheffield of Rolling Stone acknowledged the influences of Madonna but pointed out that they would not overshadow the song, as it "[summed] up all the complex Gaga mythos, all her politics and Catholic angstand smeared lipstick, in one brilliant pop blast."
Caryn Ganz, while writing for Yahoo! Music, criticized "Born This Way", stating that the song was "overworked, overwrought, noisy, cheesy, and very, very derivative." She specifically noted the similarities to songs like "When Love Takes Over" (2009), "Waterfalls" (1995), and three of Madonna's songs: "Express Yourself", "Ray of Light" (1998), and "Vogue" (1990).
Neil McCormick of The Daily Telegraph noted that the imitative nature of the song would affect perceptions of Gaga's artistry, since "Born This Way" was "[basically] a reworking of Madonna's 'Express Yourself' with a touch of 'Vogue', which is a bit too much Madonna for someone who is trying to establish her own identity as the, er, new Madonna."
Williams, Juliet A. (2014). "Same DNA, but Born this Way: Lady Gaga and the Possibilities of Postessentialist Feminisms" (PDF). Journal of Popular Music Studies. 26: 28–46.
最后这篇来自UCLA的论文中也提了Express Youself This Way的问题，不过主干还是女权流行文化演化角度分析，有兴趣的可以自己去看看全文。

面对这如潮水般涌来的媒体雌竞，最先回应争议的还是我们人美心善的后辈嘎嘎：
在与Jay Leno的今夜秀上，嘎嘎首谈抄袭，称自己的Express Yourself This Way收到了来自麦当娜方的电子邮件许可，并迷妹般的贡献出了建议部分嘎迷背诵全文的名句：
If the Queen says it shall be, then it shall be.
算是为嘎麦线的美好热恋续弦，只可惜后来的一切事与愿违了

好贴支持了

事发不久后，嘎嘎的电子邮件说被麦当娜方在接受CNN采访时完全否认，称这是不存在的事。作为回应，嘎嘎小姐在接下来的NME访谈中也彻底改口长篇大论致敬了这一“我不是，我没有”的回应，以下是嘎语原文，建议全文背诵：
Why would I try to put out a song and think I'm getting one over everybody? That's retarded. I will look in your eyes and tell you that I'm not dumb enough or moronic enough to think that you are dumb or moronic enough not to see that I would have stolen a melody. If you put the songs next to each other, side by side, the only similarities are the chord progression. It's the same one that has been in disco music for the last 50 years. Just because I'm the first fucking artist in 25 years to think of putting it on Top 40 radio, it doesn't mean I'm a plagiarist, it means I'm fucking smart. Sorry.

来支持了

来而不往非君子。既然嘎嘎都率先对媒体首谈又再谈了，作为事件的主角，麦当娜本人也终于在12年接受ABC News采访时对Express Yourself This Way做出了回应，称模仿其实是最大的赞美，自己备感荣幸，并首提了嘎麦线重要关键词Reductive

我噶就是一个为了名利和成绩不择手段两幅面孔无视规则和道德的女子。和我噶走得近的，大部分最后都和她不往来，无论是星蛋时期的前男友，还是出道时的经纪人，无论是出道前的闺蜜打雷，还是一起搬🛏️进白宫的亚裔闺蜜。

之后在2012年中旬，Billboard为她们俩颁发了世界仇恨大奖，以表彰她们本人互撕的流行文化重要性吧这个奖到底是她俩哪一方买的，还是都没买或者都买了，没有人知道，但是从这里开始，这场难得的世纪撕逼很明显真情实感的意味少了，戏的成分多了，有点像联合炒作。

还是珍如昌抄袭哥哥没有后遗症

除了上述的曝光之外，滚石在这段时间也专门发了一个谁才是流行女帝的排名文章，VH1也出了一个最伟大的女性音乐人的排名，总之就是对两方其实都是利大于弊。这段时间除了媒体线，粉丝线和网络线也很热闹先是嘎迷围攻麦当娜ins后麦当娜终于出面网络炮轰了我嘎，导致我嘎前脚推特说自己是麦当娜的赝品，后脚又本人亲自下场说全网都没几个麦当娜粉丝了不过那段时间我嘎真性情上网的有趣语录实在太多了，稍后贴出来