Meghan Markle was booked to go on a late night US talk show to promote her podcast but it has been shelved following the death of Queen Elizabeth II.
The Duke and Duchess of Sussex were in the UK as part of a mini European tour when the monarch suddenly passed away on Thursday.
Harry had been due to speak at the WellChild awards in London on the same day but pulled out so he could rush to Balmoral Castle in Scotland where Elizabeth II died surrounded by her family.