Britney Spears takes the plunge in a frilly floral dress as she poses in her backyard

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Britney Spearslooked ready for spring as she appeared on Instagram in a plunging floral dress on Wednesday.The pop star, 40, uploaded a video of herself modeling the feminine garment beneath a tree in the backyard of her Thousand Oaks home.'I’m ALIVE … heartbeat,' captioned Britney, who set her video to the tune ofDom La Nena's trackOiseau Sauvage.

Flirty in floral:Britney Spears looked ready for spring as she appeared on Instagram in a plunging floral dress on Wednesday Strike a pose:The pop star, 40, uploaded a video of herself modeling the feminine garment beneath a tree in the backyard of her Thousand Oaks homeThe song, which features lyrics in Spanish, Portuguese and French, opens with the sound of a heartbeat.Britney's frilly dress had puffed sleeves and a ruffled skirt that swayed around as she posed with her hands over her stomach.

The Toxic hitmaker's flowing blonde hair, which she recently got back after a brief stint with purple tresses, was worn down and parted to one side.She accessorized with a single pendant necklace and a pair of red beaded bracelets.The Louisiana native also flashed the stunning engagement ring she received from her fiance Sam Asghari, 27, in September.

Digging it:The song, which features lyrics in Spanish, Portuguese and French, opens with the sound of a heartbeat Blonde bombshell: The Toxic hitmaker's flowing blonde hair, which she recently got back after a brief stint with purple tresses, was worn down and parted to one sideIn the clip, Britney tugged at the neck of her dress as she showed off her slim frame for the camera.Earlier in the day, Britney shared a letter she received from Congress, and an invitation for her to speak about conservatorship reform.She posted the note in full.