Iggy Azalea has announced that Demi Lovato will be a bridesmaid at her wedding.  The Australian rapper got engaged to basketball player Nick Young earlier this month (with Demi as a witness), and has already started planning her nupitals. Demi witnessed Iggy's engagement (image: Instagram).  On the Late Late Show with James Cordon, the Black Widow singer opened up about her plans, including the fact that will have four bridesmaids on the day. The 25-year-old revealed that her bridesmaids will be "literally everyone I'm friends with", adding, "Demi Lovato's going to be one of my bridesmaids." Iggy hopes Demi will perform at the ceremony. Taking part in a 'Carpool Karaoke' skit, the star sang along with some of her greatest hits and even agreed to let Cordon officiate her wedding (if he gets ordained first). The pair then went dress shopping (eh... isn't that Demi's job?) and chat quickly turned to the neckline of Iggy's wedding dress. When the cheeky host asked if she wanted to "push 'em up" or "let 'em rest", Iggy quipped "let 'em rest". The pair have been dating for over a year.  Iggy also revealed that while her fiancée wants R Kelly to perform at the wedding, she has her hopes set on Demi double-gigging and taking to the mic. We love the fact that these two are BFFs. Brb, dreaming of an Iggy/Demi collab.