Cressida's half-sister Isabella Calthorpe (rumoured to have once turned down Prince William) is marrying Richard Branson's son Sam and both Hazza and the missus are on the guest list.
A close friend of the couple, who have been seen smooching on the slopes in Geneva this week, allegedly told The Mirror Haz and Cress are smitten. "It is developing into a true romance," they said. "Harry and Cressida are just getting to know each other but they are very happy.
"It's early days but they are having fun together and enjoying spending time in each other's company."
If Cressida is set to be the next K-Middy we better get clued up on who the eccles cake she is. So here's the scoop, five need-to-know facts about Cressy:
1. She's the daughter of a Lady
Cressida's mum is Sixties it girl Lady Mary Gaye. Lady Gaye has five children from four different husbands (all of whom she divorced).
2. She's pals with Eugenie
Rumour has it that Cressida was fixed up with Hazza after Princess Eugenie introduced them.
3. She's got a right Royal dating history
Cressida loves a bit of blue blood and used to date Harry Wentworth-Stanley whose stepfather, the Marquess of Milford Haven is a cousin of the Queen. Rather!
4. She went to an exclusive school, obviously
Harry's new girl was educated at the 30k-a-year Stowe School in Buckingham, before trotting off to Leeds University to study dance.
5. She's got besties in high places
Among her inner circle is Arthur Landon aka number four on the Sunday Times Young Rich List and he's set to inherit an estimated £200m fortune. Can we get his number?
After getting to grips with Miss Bonas we feel the need to look at 200 pics of the now off the market Prince Harry, won't you join us?