Crystal Harris, the former fiancée of Playboy tycoon Hugh Hefner, was one of the search terms with the biggest increase in growth over the seven days prior to June 20, according to data from Google Insights.    

The 25-year-old blonde Playmate called off her marriage to 85-year-old Hefner on June 14, stating on her website, "After much deep reflection and thought I have decided to end my engagement with Hef. I have the utmost respect for Hef and wish him the best going forward [...]."

Following this announcement, searches for "Crystal Harris" increased 2,550 percent over the past seven days, making the Playmate's name one of the search terms with the biggest increase in growth in the world over this period.

Data shows that the majority of searches originated in the United States, Australia and Northern Europe and are related to images of the Playmate or son of TV personality Dr. Phil - Jordan McGraw - with whom it is rumored Crystal is romantically involved.

Other popular search terms this week include "Stanley Cup" and "Vancouver Canucks," after riots related to a hockey game swept through the streets of the Canadian city.

Following the lunar eclipse on June 15, the term "eclipse" increased by 800 percent and  "lunar eclipse" by over 5,000 percent. The large growth of the latter term can most likely be attributed, at least in part, to a related Google Doodle which automatically searched for the cosmic event when clicked.

The ten search terms with the most significant growth worldwide in the last seven days, as  measured by Google Insights and recorded on June 20, were:

01.  lunar eclipse (breakout*) increase due to related Google Doodle
02.  crystal harris (+2,550%)
03.  eclipse (+800%)
04.  ginger lee (+300%) pornstar allegedly related to Anthony Weiner case
05.  stanley cup (+150%)
06.  green lantern (+100%)
07.  vancouver canucks (+90%)
08.  lebron james (+80%)
09.  referendum (+80%)
10.  game of thrones (+70%)

*Breakout defines a search term that has experienced a change in growth greater than 5,000 percent.