Krirsten is an annoying woman who appeared at the restaurant in Something New. She and her boyfriend expressed their hatred of the cigars that Barney and Robin brought to the restaurant to the point that Barney and Robin are unable to look at their cigars. Barney and Robin tried not to let this get in the way of their night together, but when Krirsten and her boyfriend took their table, they got angry and tried to break them up. Robin put her engagement ring in a champagne glass and had it delivered to Krirsten and her boyfriend's table in an attempt to fake a marriage proposal, to which Krirsten said yes. Her boyfriend explained that it was a mistake, which led to a big fight. At the end of the episode, they announced to Barney and Robin that they are getting married after 7 years of dat