Jessica Simpson Celebrated Her Birthday With an Old Pair of Jeans

Jessica Simpson shared an Instagram photo of herself sporting throwback True Religion jeans in the final hours of her 30s.

Jessica Simpson's Best Sexy, Flirty Fashion Moments: Pics

Jessica Simpson Celebrates 40th Birthday By Wearing 14-Year-Old Jeans

Simpson's Birthday Break-Up

Jessica Simpson 'Was in Complete Shock' Her 14-Year-Old Pair of

Jessica Simpson Slips Into 14-Year-Old Jeans to Celebrate 40th B-Day

Jessica Simpson's Daughter Birdie, 5, Is Her Mini-Me in New Family Photos from Her Birthday Celebration

See Jessica Simpson's Toned Legs in Daisy Dukes!

Jessica Simpson, 42, flashes her cleavage in a denim outfit

Jessica Simpson Turns 40: Inside Her Long Journey to Finding Love and Self-Confidence in the Spotlight