The White House press secretary Karoline Leavitt has faced fresh allegations of having undergone cosmetic procedures after ...

Using her red lipstick, she draws a smile on the glass partition between them, prompting Joker to seamlessly morph his mouth into the mark, giving his lover a classic Joker grin. Fans have dubbed ...

All smiling involves contraction of the zygomatic major muscles, which lifts the corners of the mouth. But a Duchenne smile is characterised by the additional contraction of the orbicularis oculi ...