Lady Gaga Opens <br />'Haus of Gaga' Fashion Exhibition <br />in Las Vegas It looks like Gaga is going to be <br />spending a bit more time in Sin City. In addition to her 'Enigma' residency that runs <br />until November, she now has the 'Haus of Gaga,' <br />a museum filled with her fashion collection. The museum, which <br />opened Thursday <br />at Park MGM, will <br />display about 40 <br />iconic fashion pieces <br />that the singer has <br />worn over the years. The 33-year-old pop icon <br />took to Twitter on Wednesday <br />to share the news. Curator Nicola Formichetti shared <br />their joint vision in a press release. Nicola Formichetti, <br />via statement Nicola Formichetti, <br />via statement Some pieces will be auctioned off, <br />and proceeds will go to the <br />Born This Way Foundation.