The Rare Beauty founder, 32, looked like a modern-day princess as she celebrated her fiancé, who marked his 37th birthday on Saturday ... posing with Mingus and Anna Collins in a strapless, hot pink ...

She then proceeded to go out and celebrate. Sami posted a photo of her pink frosted birthday cake with 21 metallic pink birthday candles sticking out. She also posted a video of herself ...

The Queen looked elegant in a light pink ensemble as she arrived alongside Prince Philip in a horse-drawn carriage Her Majesty smiled and waved at the thousands of spectators as she arrived today ...