Audrina Patridge may be pregnant, but one thing about her is exactly the same. The 30-year-old Hills alum is still rocking those bikinis, baby bump and all. Patridge revealed in December she and fiancé Corey Bohan were expecting their first child together , a month after they got engaged . Patridge posted on her Instagram page a photo showing her wading in the ocean in a mismatched, black and teal striped bikini.