Question: Who built the resort that Kathy Griffin recorded Look at My Butt Crack at?

Context paragraphs:
50 and Not Pregnant: 50 and Not Pregnant is the fourth album and eleventh Bravo stand-up comedy special by stand-up comedian Kathy Griffin and thirteenth overall.  It was televised live from the Riverside Theatre in Milwaukee, Wisconsin on  17, 2011 (2011--) on Bravo.  It was also re-released on  30, 2012 (2012--) as part of The Kathy Griffin Collection: Red, White & Raw.

Kathy Griffin: My Life on the D-List: Kathy Griffin: My Life on the D-List is an American reality television series that aired on Bravo from August 3, 2005 to August 3, 2010.  The series follows the struggle of self-proclaimed "D-list" celebrity Kathy Griffin to climb the Hollywood ladder.  This often includes scheming for publicity with staffers Jessica, Tiffany, and Tom.  Her relationships with her parents and her now ex-husband were also featured.

Whores on Crutches: Whores on Crutches is the tenth Bravo stand-up comedy special by stand-up comedian Kathy Griffin and twelfth overall.  It was televised live from the Pechanga Resort and Casino in Temecula, California on November 2, 2010 on Bravo and released on  30, 2012 (2012--) on Bravo as a part of the Kathy Griffin Collection: Red, White & Raw.  It was originally called "Diva in a Tipi".

Pants Off: Pants Off is the third home video release and thirteenth Bravo stand-up comedy special by stand-up comedian Kathy Griffin and her fifteenth overall.  It was televised live from the Segerstrom Center for the Arts in Costa Mesa, California on  20, 2011 (2011--) on Bravo.  It was released simultaneously with Tired Hooker.  It was originally titled "Kathy Griffin: Pray The Gay Back".

Kimber Rickabaugh: Kimber Rickabaugh of RickMill Productions (founded 1991), along with her partner Paul Miller, is a veteran producer responsible for numerous television shows for Comedy Central, HBO and other networks.  After starting at NBC in New York, she next was under contract with Dick Clark Productions until she went freelance as a producer in 1986, where she produced HBO's first "LIVE Comedy Special".  In 1986 she married Gene Crowe, a technical director and design engineer and co owner of Greene Crowe & Co. inc.  Rickabaugh and Crowe have worked together a few times on shows such as "George Lopez", "The Whoopi Goldberg Show", and "The Earth Day Special".  Rickabaugh formed RickMill Productions in 1991 with Paul Miller, who also directs, and the team continues to be active producers of comedy and variety series and specials.  She produced, to name a few, all of the George Carlin HBO specials, for Dave Chappelle, Whoopi Goldberg, Howie Mandel, Lewis Black, MTV and multiple specials and series yearly.  RickMill Productions produced 15 seasons of "Comedy Central Presents" series.  RickMill also has an ongoing relationship with Kathy Griffin.  The relationship with Kathy Griffin started in 2010, producing all her stand-up specials for BRAVO.  Kathy Griffin set an unprecedented feat of 4 one-hour specials in 2011.  RickMill produced all Kathy's specials in 2012 and 2013 where Kathy set a new record for the most televised comedy specials surpassing George Carlin's record.

Look at My Butt Crack: Look at My Butt Crack is the sixth comedy album recorded live on  14, 2014 (2014--) in Las Vegas, Nevada at The Mirage by American stand-up comedian Kathy Griffin.

Gurrl Down: Gurrl Down is the twelfth Bravo stand-up comedy special by stand-up comedian Kathy Griffin and fourteenth overall.  It was televised live from the Wilbur Theatre in Boston, Massachusetts and released on  30, 2012 (2012--) on Bravo as a part of the Kathy Griffin Collection: Red, White & Raw.

Balls of Steel (Kathy Griffin special): Balls of Steel is the eighth Bravo stand-up comedy special by stand-up comedian Kathy Griffin, and her tenth overall.  It was televised live from the civic center in San Diego, California and released on  30, 2012 (2012--) on Bravo as a part of the Kathy Griffin Collection: Red, White & Raw.

Intergluteal cleft: The intergluteal cleft, also known medically by various synonyms and colloquially as the "butt crack" or "ass crack", is the groove between the buttocks that runs from just below the sacrum to the perineum, so named because it forms the visible border between the external rounded protrusions of the gluteus maximus muscles.  The intergluteal cleft is located superior to the anus.

The Mirage: The Mirage is a 3,044 room Polynesian-themed resort and casino resort located on the Las Vegas Strip in Paradise, Nevada, United States.  The resort was built by developer Steve Wynn and is currently owned and operated by MGM Resorts International.

Supporting paragraphs: Look at My Butt Crack The Mirage
Answer: developer Steve Wynn