Speaking to the Express, body language expert Judi James claims that prior to the White House both women flanked the President like "bookends":
The look seemed to have the objective of raising his alpha profile and both women seemed to play along, complimenting his all-powerful male look by posing like beauty pageant queens.
But the presidency has introduced a new dynamic according to James, who added:
[Melania is] following in the footsteps of one of the most charismatic First Ladies ever, while Ivanka plays the role of King's Hand, chief support, adviser and even stand-in at world leadership occasions.
The role of First Lady seems to have driven Melania into a Mount Rushmore-esque stony facial expression at times and those times are often when she is around her step-daughter Ivanka.
This makes Melania appear frostier than Ivanka, whose facial expressions are friendlier-looking.
Here are three pictures of the pair analysed by body language experts.
Picture one: the inauguration
Picture: Getty Images/ Mark Wilson / Staff
James believes that their similar outfits "project an impression of sisterly unity".
Speaking toindependent.ie, body language Tracey Cox pointed out that Ivanka and Melania do not look completely comfortable with one another.
That's called blocking, her arms are crossed in front of herself as if to say, 'keep away from me', it's a self-protection gesture.
Ivanka's hands are like a steeple with her fingers and thumb entwined saying, 'I'm the dominant one here so don't try to pretend that I'm not'.
After pictures of Melania appearing to look sad at the inauguration went viral, most suspected that she was unhappy in her marriage.
But a few amateur body language detectives think that she was put out by Trump ignoring her in favour of his daughter.
Theory: Trump turned to look at his daughter and ignored his wife. https://t.co/aNk6eniVVM