Another first timer to Celebrity Bikini Gossip is American actress Amanda Bynes. She had a rough time the past year following a public breakdown and months-long stay in various psychiatric treatment facilities. However, Amanda Bynes is starting off her 28th year on a far healthier footing. The actress displayed her slender figure in a neon green bikini as she soaked up the sun on Tuesday, the day before her birthday, with her parents in Cabo San Lucas, Mexico.