Clemenger Sisters Series by Trish Morey

Opal Clemenger's facing bankruptcy, and the only man who can rescue her is ruthless tycoon Domenic Silvagni. Domenic's "filthy" rich, and he thinks money can purchase him anything-- including a wife. So he agrees to help Opal, but only if she consents to his marriage ultimatum. Opal has no choice but to marry Domenic, but then he makes another demand: she must provide him with an heir. But Domenic quickly realizes that there's one thing he can't buy-- his wife's love... .

Sheikh Khaled Al-Ateeq has asked Sapphire Clemenger to design the wedding gown of his intended bride. But there's more to Khaled's deal than meets the eye: Sapphy must accompany him to his desert palace, and she's forbidden to meet the bride-to-be. How strange when she's told the bridal gown's measurements are her own.... Sapphy realizes that she's been stolen by the sheikh--because she's his chosen wife!

When Ruby Clemenger inherits half of the Bastiani Pearl Corporation, she knows that her life is about to get complicated. Zane Bastiani, the pearl master's son, wants rid of Ruby--he thinks she was his father's mistress and can be easily bought. But Ruby's price is high. Unable to pay her off with cash, Zane decides to seduce Ruby into submission. He has nothing to lose--until he discovers Ruby is innocent... in every way... .