The Sip 'n Dip Lounge is a tiki bar in Great Falls, Montana, US, opened in 1962, when Polynesian themes were popular.

The mermaid concept was introduced in 1995 when there was a revival of the tiki fad and was the brainchild of the bar's current owner who wanted to add a "fun factor".

The tropical theme was also viewed as a fun concept for Montana,[4] a landlocked state with long, cold winters.

[5] Though tiki bars in general declined in popularity in the late 1970s and 1980s until the revival of the style in the 1990s,[6] the Sip 'n Dip survived with few changes.

[5] She performed what one reviewer described as "unusual covers" of songs, particularly those of Frank Sinatra, Neil Diamond and Elvis Presley.

She was a 28-year-old divorced single mother of three[3] when she started working as the Sip 'n Dip's piano player in 1963, taking the position as a second job in order to support her children.

[3] She celebrated 50 years of employment at the Sip 'n Dip in December 2013 and, at that time, the octogenarian was featured on CBS Sunday Morning.

"[3][14] The bar employs six women part-time, who wear mermaid costumes and swim in the pool five evenings a week.

[15] The bar's most famous patrons appeared in 2002, when Daryl Hannah, Anthony Edwards and Nick Nolte visited while working on the movie Northfork,[16] which was filmed in the Great Falls area.

[17] The pool is also open to motel guests,[18] and, in spite of signs warning swimmers that they can be viewed from the bar while swimming, people have been known to skinny dip.

[1][5][17][19] Frommer's travel guide calls it "one of the kitschiest, wackiest, and flat-out coolest nightspots, not just in Montana, but in the entire West.

"[11] In 2014, USA Today ranked the Sip 'n Dip as one of the ten best tiki bars in the United States.

The fire department kept its pumper truck standing by in case a more rapid removal of water was needed.