In the cheeky video the blonde beauty thrills viewers by playing homage to a certain Hollywood superstar.
Busty model Sara enjoys a bubble bath, glass of fizz and a good old chat about penny stocks in the racy footage.
Eagle-eyed viewers quickly picked up on the clip being a nod to Margot Robbie’s cameo appearance in 2015 Brad Pitt and Ryan Gosling flick The Big Short.
In the film, documenting the global recession from 2007-2009, The Wolf of Wall Street actress explains the subprime mortgage securities market to the camera while reclining in a bubble bath.
Former Playmate of the Year Sara gives a similarly titillating speech from the comfort of her bathroom.
youtube
RACY: Viewers were unsurprisingly won over by the cheeky advertising
Stock trader turned Instagram star Timothy Sykes called on the help of the glamour model to give a smouldering explanation of penny stocks to lure in some new students.
“Everyone loves a hot tip,” Sara flirtatiously tells the camera.
She goes on: “Penny stocks all crash and burn so when you hear ‘penny stocks’ think ’s***’.
“My friend Tim Sykes actually likes this s***, because his top students and him short sell, meaning bet against these penny stocks and profit when the stocks inevitably crash.
“And that’s how they make millions of dollars. Got it? Good.”
youtube
THROWBACK: Sara did an impersonation of Margot Robbie in The Big Short
Sara Underwood
InstagramViewers couldn’t be sure of the content of the clip – but they were definitely interested.
“Good bathtub chat, now back to my studies,” one person commented.
Another said: “I’ve got to hand it to you, you got my attention. Though I couldn’t fully concentrate I have to admit.”
When she’s not talking finance, Sara enjoys travelling the globe in a variety of barely-there bikinis.
The model recently went kayaking to the joy of her eight million Instagram followers.
Before that she visited a waterfall – but viewers were more interested in her peachy bum.