Sydney Sweeney celebrated her 28th birthday with an elaborate space-themed celebration. Sweeney shared glimpses of the celebration on Instagram with the caption: “welcome to planet syd 👽🛸🚀.”A Stellar Fashion MomentSweeney made a striking fashion statement for her birthday festivities. Sánchez wore a silver metallic mini dress with subtle boning that coordinated with Sweeney’s outfit. The source added that Sweeney “had a great time celebrating her birthday with” Braun, describing him as “easy to be around and an intriguing guy.”The space theme appeared consistent with Sweeney’s recent birthday trip to Utah several weeks prior. Sweeney’s actual birthday falls on September 12, making this celebration a belated but spectacular affair.