The TOWIE star has been looking incredible since announcing in January that she's expecting her first child, and yesterday was no different as she tried on another fab outfit from her bulging wardrobe.
This little number is from an upcoming range her Minnies Boutique so it's not available just yet – but keep an eye out. We imagine it will fly off the shelves for summer.
Aside from spending yesterday looking gorge, the blonde starlet was celebrating a huge milestone: one million followers on Twitter!
Meanwhile, on last night's episode of TOWIE, viewers saw Billie, 24, embarking on a hypnobirthing class alongside sister Sam and friend Jessica Wright.
Fashion designer Billie is the first TOWIE girl to become pregnant; she's already revealed that she and fiancé Greg Shepherd are expecting a little girl.
Co-star Dan Osborne was the first TOWIE castmember to become a parent when his ex-girlfriend gave birth to son Teddy in December 2013.
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Billie's not alone! More stars expecting babies in Reveal's gallery below:
Copyright: WENN Lexie Appleby/Future Image/Bridow/Instagram