Olivia Newton-John's niece said the actress "really struggled with a lot of pain" before she died Monday.
Posen took to Instagram to share photos of him and his fiancé and show off their engagement ring.
The former couple had made their relationship Instagram official earlier this month.
The royals of Saudi Arabia are said to be the richest royal family in the world with a combined net worth of $1.4 trillion.
The day is aimed at encouraging people to find a good book and settle down in a nice reading spot.
"Ironheart" is slated to release on Disney+.
Jacob Elordi is currently filming a thriller movie, "Saltburn," which is helmed by director Emerald Fennell.
The world tour will kick off in Seoul on Oct. 15 and 16.