“Baby I’m Jealous” of how good Bebe Rexha looks! The pop star, 34, never fails to thrill her millions of followers with glimpses of her sultry curves on Instagram. From her gorgeous performance looks to her stunning vacation ensembles, the celeb is always receiving tons of love from fans over her jaw-dropping appearance. Over the last year, the blonde beauty has served some of her best looks yet! Scroll through the gallery to see Rexha’s hottest moments of all time. On August 9, the chart-topper shared some saucy snaps from behind the scenes of her new music video, “My Oh My.” Rexha wore a bod…