Rihanna
The mega-star looked lovely in lilac as a bridesmaid in assistant Jennifer Rosales' Hawaiian wedding on April 20, 2015.
The 28-year-old had a blast goofing off with her good pal before the ceremony, but got serious when posting a picture of the happy couple, writing, "Perfection."
Speaking of 4/20…it looks like the singer may also be celebrating ANOTHER occasion, if you catch our drift (aka Weed Day).
