When it comes to wedding etiquette, there’s a lot that guests are expected to observe.Unfortunately, people don’t always get it right!

UK fashion chain Jacamo asked wedding guests to describe the most rude, offensive and inappropriate behaviour they had witnessed at weddings.

From the clothes guests sometimes wear to weddings, through to the way they behave, these are the top 20 faux pas guests are guilty of:

1. Bad taste best man’s speech

2. Leaving before the reception speeches are finished

3. Guests wearing outfits that are far too revealing

4. Wearing all white or all black

5. Bringing someone who was not invited/failing to RSVP but turning up/arriving late/changing table places

6. Taking flash photography at the ceremony

7. Wearing a dress very similar to the bridesmaids

8. Blocking out the view of others in church with very large brimmed hats

9. Wearing sunglasses in church

10. Getting drunk/rowing and causing a scene

11. Forgetting to turn the ringer off your mobile phone for the ceremony or speeches

12. Turning up in jeans

13. Being too aggressive when trying to catch the bride’s bouquet

14. Mistakenly wearing black tie and dinner jacket

15. Arguing with partner

16. Aggressive dad dancing

17. Photo bombing official photos

18. Posting on social media when asked not to

19. Forgetting the names of the bride and grooms parents

20. Trying to chat up the bride or flirt with the groom